Issue:
DID A FIRMWARE Upgrade without putting module into boot mode, and it failed by timeout.
No AT command worked after that
Setup:
RAK4200 BREAKOUT MODULE
SERIAL PORT TOOL 1.2.1
RAK_Device_Firmware_Upgrade_Tool_v1.4
Server:
n/a
Details:
DID A FIRMWARE Upgrade without putting module into boot mode first, and it failed by timeout.
No AT command worked after that,
thus nothing can be done on it anymore. it is bricked
Needs to know how to revive it.
Thanks
2, at+run likes other at commands, returns nothing. I had made it clear in my the 1st post that it never entered boot loader mode. I did the upgrade while the board is running normally, and after the upgrade failed, I could still connect to the board via serial port, however no at command issued got any return
Also have a bricked 4200 here, because it was coming with FW for 4270.
→ used DFU Tool V1.4 to update Firmware to 3.2.0.15.
I have connected UASRT2 via a FTDI cable to my PC.
Upgrade timed out, now module does not respond anymore. ( It did before upgrade trial )
How to continue and make it respond again?