hi @cswiger,
It looks like there was firmware update interrupt. Now FX3 MCU boots into bootloader mode.
You may try the following steps using LimeSuiteGUI:
- Download the latest firmware image file;
- Connect the LimeSDR board;
- Run LimeSuiteGUI and connect to the device;
- Go to Modules -> Programming menu;
- Select FX3 in Device list and Firmware to RAM in Programming mode. Open image file you downloaded in the step 1;
- Push Program and wait till programming is finished;
- Connect to the device again in LimeSuiteGUI. Now you will see it as usually;
- Perform step 4;
- Set everything as in step 5 just choose Firmware to Flash instead of Firmware to RAM in Programming mode;
- Push Program and wait till programming is finished.
Check if everything is OK by re-connecting the board.