I've had a number of problems with the 4 SyPy boards I have, especially with updating the firmware. One in particular has persisted in refusing to update using the bash script. I tried updating with a Windows machine and it appeared to work but now the device has a permanent red LED.
I tried using the Windows update again, and again it appeared to work, but I still have the red LED.
Is this completely bricked now?
@robert-hh I had to connect G23 with GND as per the update process. The update failed 3 more times with the bash script but the last one using windows seems to have worked.
Someone needs to work on the bash script!
Many thanks for the help.
@robert-hh I get an error: A fatal error occurred: Failed to connect to Espressif device: Timed out waiting for packet header. The LED is now yellow.
@alidaf If the device shows a red LED then it still works, but just the firmware configuration is messed up. Try to erase the flash completely and re-load the device. Erasing is done with esptool.py, V2.01. Prepare the device like you would to uploading: connect G23 to GND and push reset. The command is:
python esptool.py -p <your_com_port> -b 460800 erase_flash
After that, you should be able to re-flash the device.