I was able to execute
particle flash --serial electron_xxx.bin after pressing the mode button down for three seconds for the past couple weeks but it’s no longer working. Now when I press the mode button down for three seconds or longer, the LED never starts to flash blue like it used to. It just keeps breathing white which is likely a remnant of old firmware that had a
Cellular.off(); call. If I try to do
particle flash --serial electron_xxx.bin now (without the blue light flashing), it (unsurprisingly) gives me this message:
! serial: Error writing firmware...Timed out waiting for initial response from device undefined
I’ve also tried
mode COM10 14400 which gets the LED flashing yellow and then I can do a
particle flash --usb electron_xxx.bin but the script isn’t working and I can’t tell if it’s a serial/USB connectivity problem or something else.
I’m working in a lab that has poor cellular connectivity for initial testing, hence the
Cellular.off(); call but I thought I could test other parts of the firmware in here as I’ve been doing for a couple weeks without needing cellular connectivity.
Any suggestions for getting my blinking blue LED back? Thanks!