RHC2 on Systemcore Dashboard Crashes On Load (attempting to Update A301 Firmware)

[yoavnycfirst]

Summary

We (myself and our summer interns ;) ) were trying to update firmware on an A301 so it could be used with REVLib 2027.0.0-alpha-3.

REVLib could detect the A301, but it refused to run it because the firmware was too old and required at least:

27.0.0-prerelease.11

We installed REV Hardware Client 2 on Systemcore using the IPK through the Systemcore dashboard. RHC2 opened in the dashboard, but the UI crashed before we could complete the firmware update through the interface.

We were eventually able to update the A301 by bypassing the RHC2 frontend and using the RHC2 backend API from the terminal.

Environment

Item	Value
Hardware	Systemcore + Motioncore + A301
A301 connection	Motioncore D0 / can_d0
A301 CAN ID	Default CAN ID 3
REVLib	2027.0.0-alpha-3
Target A301 firmware	27.0.0-prerelease.11
Firmware file used	a301_27_0_0_prerelease_11.dfu
RHC2 install method	IPK installed through the Systemcore dashboard
RHC2 IPK version used	1.2.1
Systemcore connection used	Wi-Fi AP
RHC2 address used	http://172.30.0.1:2714

What We Tried

1. We wrote a small A301 test opmode using REVLib 2027.0.0-alpha-3.
2. The A301 was detected on Bus #5 with CAN ID 3.
3. REVLib reported that the A301 firmware was too old and required 27.0.0-prerelease.11 or later.
4. We first tried using REV Hardware Client 2 on a desktop computer.
5. We then realized that the desktop update path requires a supported bridge device, so we moved to the Systemcore path.
6. We installed the RHC2 IPK through the Systemcore dashboard.
7. RHC2 opened from the dashboard, but the UI crashed while loading.

What Went Wrong

The RHC2 frontend appeared to claim leader successfully, but then several download-related backend calls failed with HTTP 500. After that, the frontend threw:

Uncaught TypeError: o.map is not a function

From the console log, it looked like the UI expected one of the download/channel endpoints to return an array, but the backend returned an error or non-array response instead.

Because the frontend crashed, we could not use the RHC2 dashboard UI to update the A301 firmware.

Browser Console Log

layout-d7d59cb576692695.js:1 Was leader? false
layout-d7d59cb576692695.js:1 Login token: afe476de-2d1b-412d-bea8-7fbad9f2c24b-LEADER
layout-d7d59cb576692695.js:1 Is leader? true
layout-d7d59cb576692695.js:1 Selected device: null
:2714/v1/download/sync:1  Failed to load resource: the server responded with a status of 500 (Internal Server Error)
:2714/v1/download/channel:1  Failed to load resource: the server responded with a status of 500 (Internal Server Error)
layout-d7d59cb576692695.js:1 Loaded theme from settings: default
layout-d7d59cb576692695.js:1 Uncaught TypeError: o.map is not a function
    at eO (layout-d7d59cb576692695.js:1:24762)
    at l9 (4bd1b696-da2e47cdb2de7720.js:1:51128)
    at o_ (4bd1b696-da2e47cdb2de7720.js:1:70988)
    at oq (4bd1b696-da2e47cdb2de7720.js:1:82018)
    at ik (4bd1b696-da2e47cdb2de7720.js:1:114680)
    at 4bd1b696-da2e47cdb2de7720.js:1:114525
    at ib (4bd1b696-da2e47cdb2de7720.js:1:114533)
    at iu (4bd1b696-da2e47cdb2de7720.js:1:111616)
    at iX (4bd1b696-da2e47cdb2de7720.js:1:132932)
    at MessagePort.w (261-92ab24d9fd8e2db1.js:1:145824)
:2714/v1/download/:1  Failed to load resource: the server responded with a status of 500 (Internal Server Error)
:2714/favicon.ico:1  Failed to load resource: the server responded with a status of 404 (Not Found)

Workaround That Worked

Even though the RHC2 frontend crashed, the RHC2 backend API was still reachable on Systemcore port 2714.

We updated the A301 manually from the terminal by:

1. Claiming RHC2 leader access with the backend login endpoint.
2. Querying the REV device list endpoint to find the A301 UUID.
3. Creating a firmware update session.
4. Uploading a301_27_0_0_prerelease_11.dfu.
5. Starting the update session.
6. Polling the session status.

This successfully updated the A301 firmware to the minimum version needed for REVLib 2027.0.0-alpha-3.

We documented the terminal workaround in our fork as:

A301_MANUAL_FIRMWARE_UPDATE_VIA_TERMINAL.md

Question

Are we doing something wrong with the RHC2-on-Systemcore setup, or is there something else required for the RHC2 dashboard UI to work correctly when updating A301 firmware?

The backend API worked, so RHC2 was installed and running on Systemcore. The problem we hit was specifically that the dashboard UI crashed after the download-related endpoints returned HTTP 500.

We would like to know whether this is expected behavior in the current alpha setup, whether there is an installation/configuration step we missed, or whether there is another recommended way to update A301 firmware through RHC2 on Systemcore.

[jfabellera]

Did you previously have RHC2 installed on the systemcore and was then updated to 1.2.1 or was 1.2.1 the first version of RHC2 installed on your systemcore?

[yoavnycfirst]

Thank you for replying! 1.2.1 is the first version of RHC2 we installed on systemcore

[jfabellera]

I assume the crash resulted in a white screen with black text on it? This sounds like an issue that I thought we had fixed in versions prior to 1.2.1 to handle the case of a client not connected to the internet

I'm not able to reproduce this with a fresh install of Systemcore OS beta 12. Have you already tried reflashing the OS?

Do you also mind pasting your journal logs from the RHC2 service?

[yoavnycfirst]

System

Motioncore

System Status

Metric	Value
Battery	17.7V
CPU	46%
RAM	15%
Temperature	45°C
Total Services	2
Active	2
Failed	0
Inactive	0

Services

Service	Loaded	Active	Substate
limelight_motioncorevisualizer.service	loaded	active	running
rev-hardware-client-alpha.service	loaded	active	running

Service Details

Service Details: rev-hardware-client-alpha.service
Service Status
● rev-hardware-client-alpha.service - REV Hardware Client 2
     Loaded: loaded (/etc/systemd/system/rev-hardware-client-alpha.service; enabled; preset: enabled)
     Active: active (running) since Tue 2026-07-14 21:25:19 EDT; 17h ago
 Invocation: 4de6279d210e49989eac3e209b1ce1b4
   Main PID: 618 (rev-hardware-cl)
      Tasks: 38 (limit: 4780)
        CPU: 43.675s
     CGroup: /system.slice/rev-hardware-client-alpha.service
             └─618 /bin/rev-hardware-client-alpha

Jul 14 21:25:27 robot env[618]: 21:25:27.320 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Sparks
Jul 14 21:25:27 robot env[618]: 21:25:27.320 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Pneumatic Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Encoders
Jul 14 21:25:27 robot env[618]: 21:25:27.322 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Done processing REVLib devices
Jul 14 21:25:27 robot env[618]: 21:25:27.347 INFO  [io.quarkus] - server 1.2.1 on JVM (powered by Quarkus 3.36.0) started in 5.528s. Listening on: http://0.0.0.0:2714
Jul 14 21:25:27 robot env[618]: 21:25:27.347 INFO  [io.quarkus] - Profile prod activated.
Jul 14 21:25:27 robot env[618]: 21:25:27.348 INFO  [io.quarkus] - Installed features: [agroal, cdi, flyway, hibernate-orm, hibernate-orm-panache, hibernate-validator, jdbc-sqlite, narayana-jta, picocli, reactive-routes, rest, rest-client, rest-client-jackson, rest-jackson, security, smallrye-context-propagation, smallrye-openapi, vertx, websockets-next]
Jul 14 21:25:27 robot env[618]: Quarkus loaded on port: 2714

Journal Log

Jul 14 21:25:19 robot systemd[1]: Started REV Hardware Client 2.
Jul 14 21:25:21 robot env[618]: Running main method
Jul 14 21:25:21 robot env[618]: Showing UI? true
Jul 14 21:25:21 robot env[618]: WARNING: A restricted method in java.lang.System has been called
Jul 14 21:25:21 robot env[618]: WARNING: java.lang.System::loadLibrary has been called by com.revrobotics.revlib.support.CallbackDriver in an unnamed module (file:/usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/server-1.2.1-runner.jar)
Jul 14 21:25:21 robot env[618]: WARNING: Use --enable-native-access=ALL-UNNAMED to avoid a warning for callers in this module
Jul 14 21:25:21 robot env[618]: WARNING: Restricted methods will be blocked in a future release unless native access is enabled
Jul 14 21:25:25 robot env[618]: __  ____  __  _____   ___  __ ____  ______
Jul 14 21:25:25 robot env[618]:  --/ __ \/ / / / _ | / _ \/ //_/ / / / __/
Jul 14 21:25:25 robot env[618]:  -/ /_/ / /_/ / __ |/ , _/ ,< / /_/ /\ \
Jul 14 21:25:25 robot env[618]: --\___\_\____/_/ |_/_/|_/_/|_|\____/___/
Jul 14 21:25:25 robot env[618]: 21:25:21.574 INFO  [com.sun.jna.NativeLibrary] - Looking for library 'CallbackDriver'
Jul 14 21:25:25 robot env[618]: 21:25:21.574 INFO  [com.sun.jna.NativeLibrary] - Adding paths from jna.library.path: /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/
Jul 14 21:25:25 robot env[618]: 21:25:21.575 INFO  [com.sun.jna.NativeLibrary] - Trying /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libCallbackDriver.so
Jul 14 21:25:25 robot env[618]: 21:25:21.575 INFO  [com.sun.jna.NativeLibrary] - Found library 'CallbackDriver' at /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libCallbackDriver.so
Jul 14 21:25:25 robot env[618]: 21:25:21.756 INFO  [com.sun.jna.NativeLibrary] - Looking for library 'BackendDriver'
Jul 14 21:25:25 robot env[618]: 21:25:21.757 INFO  [com.sun.jna.NativeLibrary] - Adding paths from jna.library.path: /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/
Jul 14 21:25:25 robot env[618]: 21:25:21.757 INFO  [com.sun.jna.NativeLibrary] - Trying /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libBackendDriver.so
Jul 14 21:25:25 robot env[618]: 21:25:21.757 INFO  [com.sun.jna.NativeLibrary] - Found library 'BackendDriver' at /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libBackendDriver.so
Jul 14 21:25:25 robot env[618]: 21:25:21.789 INFO  [com.sun.jna.NativeLibrary] - Looking for library 'REVLibDriver'
Jul 14 21:25:25 robot env[618]: 21:25:21.789 INFO  [com.sun.jna.NativeLibrary] - Adding paths from jna.library.path: /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/
Jul 14 21:25:25 robot env[618]: 21:25:21.790 INFO  [com.sun.jna.NativeLibrary] - Trying /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libREVLibDriver.so
Jul 14 21:25:25 robot env[618]: 21:25:21.790 INFO  [com.sun.jna.NativeLibrary] - Found library 'REVLibDriver' at /usr/lib/rev-robotics/rev-hardware-client-alpha/lib/app/../runtime/lib/libREVLibDriver.so
Jul 14 21:25:26 robot env[618]: 21:25:26.952 INFO  [com.revrobotics.revui.app.BannerLogConfigurator] -
Jul 14 21:25:26 robot env[618]:        @@@@@@@@@@@@@@@@@@@@@@@     @@@@@@@@@@@     @@@@@@@              @@@@@@@
Jul 14 21:25:26 robot env[618]:         @@@@@@@@@@@@@@@@@@@@@@@     @@@@@@@@@@@      @@@@@@            @@@@@@
Jul 14 21:25:26 robot env[618]:          @@@@@@@@@@@@@@@@@@@@@@@     @@@@@@@@@@@@     @@@@@@         @@@@@@@
Jul 14 21:25:26 robot env[618]:         @@@@@@@         @@@@@@@     @@@@@@@            @@@@@@@      @@@@@@@
Jul 14 21:25:26 robot env[618]:        @@@@@@@         @@@@@@@     @@@@@@@              @@@@@@@    @@@@@@@
Jul 14 21:25:26 robot env[618]:       @@@@@@@         @@@@@@      @@@@@@@@@@@@@@@@@@     @@@@@@@  @@@@@@@
Jul 14 21:25:26 robot env[618]:      @@@@@@@  @@@@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@     @@@@@@@@@@@@@@
Jul 14 21:25:26 robot env[618]:     @@@@@@@    @@@@@@@@@@@     @@@@@@@@@@@@@@@@@@@@@@@     @@@@@@@@@@@@
Jul 14 21:25:26 robot env[618]:    @@@@@@@      @@@@@@@       @@@@@@@                       @@@@@@@@@@
Jul 14 21:25:26 robot env[618]:   @@@@@@@        @@@@@@@     @@@@@@@                         @@@@@@@@
Jul 14 21:25:26 robot env[618]:    @@@@@          @@@@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@     @@@@@
Jul 14 21:25:26 robot env[618]:     @@@            @@@     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@      @@
Jul 14 21:25:26 robot env[618]:      @              @     @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Jul 14 21:25:26 robot env[618]: 21:25:26.967 INFO  [com.revrobotics.device.detection.Detector] - Detected devices: []
Jul 14 21:25:27 robot env[618]: 21:25:26.999 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Taking lock for processing REVLib devices
Jul 14 21:25:27 robot env[618]: 21:25:27.001 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing device list: []
Jul 14 21:25:27 robot env[618]: 21:25:27.001 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Servo Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.003 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Sparks
Jul 14 21:25:27 robot env[618]: 21:25:27.006 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.008 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Pneumatic Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.010 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.012 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Encoders
Jul 14 21:25:27 robot env[618]: 21:25:27.015 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Done processing REVLib devices
Jul 14 21:25:27 robot env[618]: 21:25:27.035 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Initializing Java CAN
Jul 14 21:25:27 robot env[618]: 21:25:27.101 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_s0
Jul 14 21:25:27 robot env[618]: 21:25:27.103 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_s0
Jul 14 21:25:27 robot env[618]: 21:25:27.112 INFO  [com.revrobotics.canbridge.socketcan.SocketCanEpoll] - Starting epoll
Jul 14 21:25:27 robot env[618]: 21:25:27.124 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_s1
Jul 14 21:25:27 robot env[618]: 21:25:27.126 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_s1
Jul 14 21:25:27 robot env[618]: 21:25:27.128 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_s2
Jul 14 21:25:27 robot env[618]: 21:25:27.129 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_s2
Jul 14 21:25:27 robot env[618]: 21:25:27.131 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_s3
Jul 14 21:25:27 robot env[618]: 21:25:27.132 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_s3
Jul 14 21:25:27 robot env[618]: 21:25:27.134 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_s4
Jul 14 21:25:27 robot env[618]: 21:25:27.136 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_s4
Jul 14 21:25:27 robot env[618]: 21:25:27.139 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d0
Jul 14 21:25:27 robot env[618]: 21:25:27.139 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d0
Jul 14 21:25:27 robot env[618]: 21:25:27.141 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d1
Jul 14 21:25:27 robot env[618]: 21:25:27.142 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d1
Jul 14 21:25:27 robot env[618]: 21:25:27.144 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d2
Jul 14 21:25:27 robot env[618]: 21:25:27.146 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d2
Jul 14 21:25:27 robot env[618]: 21:25:27.150 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d3
Jul 14 21:25:27 robot env[618]: 21:25:27.152 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d3
Jul 14 21:25:27 robot env[618]: 21:25:27.157 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d4
Jul 14 21:25:27 robot env[618]: 21:25:27.158 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d4
Jul 14 21:25:27 robot env[618]: 21:25:27.164 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d5
Jul 14 21:25:27 robot env[618]: 21:25:27.165 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d5
Jul 14 21:25:27 robot env[618]: 21:25:27.167 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d6
Jul 14 21:25:27 robot env[618]: 21:25:27.168 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d6
Jul 14 21:25:27 robot env[618]: 21:25:27.171 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d7
Jul 14 21:25:27 robot env[618]: 21:25:27.174 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d7
Jul 14 21:25:27 robot env[618]: 21:25:27.176 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d8
Jul 14 21:25:27 robot env[618]: 21:25:27.178 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d8
Jul 14 21:25:27 robot env[618]: 21:25:27.179 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d9
Jul 14 21:25:27 robot env[618]: 21:25:27.180 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d9
Jul 14 21:25:27 robot env[618]: 21:25:27.180 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d10
Jul 14 21:25:27 robot env[618]: 21:25:27.182 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d10
Jul 14 21:25:27 robot env[618]: 21:25:27.184 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d11
Jul 14 21:25:27 robot env[618]: 21:25:27.185 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d11
Jul 14 21:25:27 robot env[618]: 21:25:27.186 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d12
Jul 14 21:25:27 robot env[618]: 21:25:27.187 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d12
Jul 14 21:25:27 robot env[618]: 21:25:27.188 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d13
Jul 14 21:25:27 robot env[618]: 21:25:27.190 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d13
Jul 14 21:25:27 robot env[618]: 21:25:27.191 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d14
Jul 14 21:25:27 robot env[618]: 21:25:27.194 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d14
Jul 14 21:25:27 robot env[618]: 21:25:27.195 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d15
Jul 14 21:25:27 robot env[618]: 21:25:27.195 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d15
Jul 14 21:25:27 robot env[618]: 21:25:27.196 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d16
Jul 14 21:25:27 robot env[618]: 21:25:27.197 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d16
Jul 14 21:25:27 robot env[618]: 21:25:27.198 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d17
Jul 14 21:25:27 robot env[618]: 21:25:27.198 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d17
Jul 14 21:25:27 robot env[618]: 21:25:27.199 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d18
Jul 14 21:25:27 robot env[618]: 21:25:27.200 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d18
Jul 14 21:25:27 robot env[618]: 21:25:27.201 INFO  [com.revrobotics.canbridge.socketcan.SocketCanBridge] - Created context: can_d19
Jul 14 21:25:27 robot env[618]: 21:25:27.203 INFO  [com.revrobotics.canbridge.socketcan.SocketCanContext] - Adding channel: can_d19
Jul 14 21:25:27 robot env[618]: LibUsb initialized successfully!
Jul 14 21:25:27 robot env[618]: 21:25:27.316 INFO  [com.revrobotics.device.detection.Detector] - Detected devices: [DeviceTree[root=FRCCanDevice[descriptor=can_s4, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], descriptor=can_s4, name=can_s4, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d15, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d15, name=can_d15, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d14, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d14, name=can_d14, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d17, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d17, name=can_d17, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d16, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d16, name=can_d16, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_s2, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], descriptor=can_s2, name=can_s2, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d19, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d19, name=can_d19, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_s3, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], descriptor=can_s3, name=can_s3, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d18, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d18, name=can_d18, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_s0, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], descriptor=can_s0, name=can_s0, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_s1, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], descriptor=can_s1, name=can_s1, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d7, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d7, name=can_d7, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d8, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d8, name=can_d8, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d5, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d5, name=can_d5, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d6, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d6, name=can_d6, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d11, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d11, name=can_d11, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d10, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d10, name=can_d10, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d9, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d9, name=can_d9, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d13, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d13, name=can_d13, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d12, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d12, name=can_d12, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d0, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d0, name=can_d0, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d3, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d3, name=can_d3, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d4, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d4, name=can_d4, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d1, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d1, name=can_d1, children=[]], DeviceTree[root=FRCCanDevice[descriptor=can_d2, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], descriptor=can_d2, name=can_d2, children=[]]]
Jul 14 21:25:27 robot env[618]: 21:25:27.318 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Taking lock for processing REVLib devices
Jul 14 21:25:27 robot env[618]: 21:25:27.319 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing device list: [FRCCanDevice[descriptor=can_s4, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], FRCCanDevice[descriptor=can_d15, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d14, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d17, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d16, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_s2, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], FRCCanDevice[descriptor=can_d19, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_s3, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], FRCCanDevice[descriptor=can_d18, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_s0, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], FRCCanDevice[descriptor=can_s1, id=0, isInBootloader=false, isSupported=true, type=SYSTEMCORE, uuid=32bd1c38-f04f-39f0-b89b-f508c6cc6b9e], FRCCanDevice[descriptor=can_d7, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d8, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d5, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d6, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d11, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d10, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d9, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d13, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d12, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d0, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d3, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d4, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d1, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9], FRCCanDevice[descriptor=can_d2, id=0, isInBootloader=false, isSupported=true, type=MOTIONCORE, uuid=7cb50bb1-349b-327d-9e4e-66e39cf682e9]]
Jul 14 21:25:27 robot env[618]: 21:25:27.319 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Servo Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.320 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Sparks
Jul 14 21:25:27 robot env[618]: 21:25:27.320 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Pneumatic Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Power Hubs
Jul 14 21:25:27 robot env[618]: 21:25:27.321 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Processing Encoders
Jul 14 21:25:27 robot env[618]: 21:25:27.322 INFO  [com.revrobotics.device.detection.REVLibDeviceManager] - Done processing REVLib devices
Jul 14 21:25:27 robot env[618]: 21:25:27.347 INFO  [io.quarkus] - server 1.2.1 on JVM (powered by Quarkus 3.36.0) started in 5.528s. Listening on: http://0.0.0.0:2714
Jul 14 21:25:27 robot env[618]: 21:25:27.347 INFO  [io.quarkus] - Profile prod activated.
Jul 14 21:25:27 robot env[618]: 21:25:27.348 INFO  [io.quarkus] - Installed features: [agroal, cdi, flyway, hibernate-orm, hibernate-orm-panache, hibernate-validator, jdbc-sqlite, narayana-jta, picocli, reactive-routes, rest, rest-client, rest-client-jackson, rest-jackson, security, smallrye-context-propagation, smallrye-openapi, vertx, websockets-next]
Jul 14 21:25:27 robot env[618]: Quarkus loaded on port: 2714

[yoavnycfirst]

We have not tried reflashing or reinstalling the OS yet because we do not want to risk losing access to the device and being unable to continue testing if something else fails.

Should we proceed with reinstalling the OS?

Below is just a screenshot of the RHC2 on the systemcore

[ishan-karmakar]

We (Valor 6800) are facing the exact same issue. Where can we access the A301_MANUAL_FIRMWARE_UPDATE_VIA_TERMINAL.md document you mentioned so we can move forward with our testing?

[yoavnycfirst]

We (Valor 6800) are facing the exact same issue. Where can we access the A301_MANUAL_FIRMWARE_UPDATE_VIA_TERMINAL.md document you mentioned so we can move forward with our testing?

Hi there - we successfully did it with prerelease_11 but had issues with prerelease_15. There was a notification in the wpilib repository for systemcore testing indicating that a firmware can get corrupted and then there is a bootloader option from RHC2 that can still recover but guess what - we can't get to the interface of RHC2 so we are trying to see if we can do the bootloader recovery from the terminal as well.

If you have questions about our MD it works well from a Mac the windows one we had some issues with powershell being not collaborative with the process.

also the session number is 0 if you just rebooted systemcore so if it is confusing where to get the session number - just reboot and use 0

[jfabellera]

I believe a file is corrupted and causing the backend endpoints to return a 500. A fix to handle this will be in the next release, but I would like to confirm something first.

Can you run the following command in the systemcore terminal and paste the output here? I'm curious what's in there

cat ~/.local/share/REV\ Hardware\ Client\ 2\ Alpha/sqlite/downloads.json

Then run the following commands to clear the corrupted file and restart the backend. This should theoretically fix the frontend crash

rm -f ~/.local/share/REV\ Hardware\ Client\ 2\ Alpha/sqlite/downloads.json
sudo systemctl restart rev-hardware-client-alpha.service

[yoavnycfirst]

I believe a file is corrupted and causing the backend endpoints to return a 500. A fix to handle this will be in the next release, but I would like to confirm something first.

Can you run the following command in the systemcore terminal and paste the output here? I'm curious what's in there

cat ~/.local/share/REV\ Hardware\ Client\ 2\ Alpha/sqlite/downloads.json
Then run the following commands to clear the corrupted file and restart the backend. This should theoretically fix the frontend crash

rm -f ~/.local/share/REV\ Hardware\ Client\ 2\ Alpha/sqlite/downloads.json
sudo systemctl restart rev-hardware-client-alpha.service

Added screenshot below. The commands worked, RHC2 works after and was able to upgrade A301 motors to prerelease.15 and switch thereafter to Revlib V4 ! many great thanks! - would you like to close it or leave it open as a temp solution for others?

[yoavnycfirst]

We (Valor 6800) are facing the exact same issue. Where can we access the A301_MANUAL_FIRMWARE_UPDATE_VIA_TERMINAL.md document you mentioned so we can move forward with our testing?

Read above this made using RHC2 possible!

[jfabellera]

would you like to close it or leave it open as a temp solution for others?

We'll keep it open until the fix is released. Thanks for the report!

[yoavnycfirst]

would you like to close it or leave it open as a temp solution for others?

We'll keep it open until the fix is released. Thanks for the report!

Thank you!!!