Help- looking for suggestions:

I updated my Re-ARM smoothieboard tonight to the latest version of firmware on Github. I've done this several times in the past without issue. I copied the new firmware.bin file to the re-arm SDCARD via USB connection to the RE-ARM board. I rebooted the printer- and nothing. Everything powers up- all the fans are on (that are supposed to be on), the LCD panel is lit up, but no text. Also, my PC no longer recognizes the RE-ARM as an external drive. I've tried restoring to the old firmware version via pulling the SDCARD out of the RE-ARM and directly writing to the SDCARD. I've also tried reformatting and recopying the firmware and config files back to the SDCARD. All to no avail. Any suggestions? I didn't make any other changes to the machine other than the firmware update.

thanks!
Andy

I added the status LEDs, and all four are on solid- seems like this indicates a firmware crash. I'll try formatting the SD card again and re-installing the firmware.