Closed jbheren closed 7 years ago
If you tried running
./u2f_zero_client/client.py bootloader
and it doesn't work, it may be bricked. You can try programming the bootloader again with the efm8load.exe tool. If it lost power during the flashing then it probably got corrupted and is why it won't go back into bootloader mode.
Ok thanks, then I will try to build another one. Do you think it could be recovered using a dedicated programmer ?
Yes you will have no issue with bricking it/recovering when using a programmer
Hi @jbheren, did succeed to program another chip ? I have the exactly the same error, might be related to #57
Also, for your information, as written in #57, you can put the device in bootloader again by shorting C2D pin to ground when powering the key.
I've been having the same programming issues as @jbheren. I can reset the u2f by shorting C2D and Ground when i plug the key into my computer. I'm happy to provide any files requested to help debug this.
Hi All,
I made an U2F Zero token from one OSHPARK made PCB & spent some time trying to flash it :
client.py bootloader
after keeping finger on the switch (red LED),I Think the token moved a bit as I had left my hand on the switch...
Now It seems like I am unable to set the device back to bootloader mode. Do you think I bricked it ?
Thanks again for all the big work.