@Elizar Thanks for your answer 😁 Hopefully, I have not bricked the modem but I think you are right and I have unfortunately bricked it ... I have contacted Pycom support to know if they have a way to repair it. If not, then I will probably just buy a new one. Thanks again 😉.

@aen I had a different experience. This worked for me: >>> import sqnsupgrade >>> sqnsupgrade.info() <<< Welcome to the SQN3330 firmware updater [1.2.6] >>> >>> FiPy with firmware version 1.20.0.rc13 Your modem is in application mode. Here is the current version: UE5.0.0.0d LR5.1.1.0-46470 Then on the terminal: >>> sqnsupgrade.run('/dev/ttyACM0', 'NB1-41019.dup') <<< Welcome to the SQN3330 firmware updater [1.2.5] >>> Firmware file is too big to load via FFF method. Using ON_THE_FLY Attempting AT wakeup... Session opened: version 1, max transfer 8192 bytes Sending 5835531 bytes: [########################################] 100% Waiting for modem to finish the update... <<<=== DO NOT DISCONNECT POWER ===>>> Resetting............................. Your modem has been successfully updated. Here is the current firmware version: UE6.0.0.0 LR6.0.0.0-41019 When I tried your method (to upgrade) the result was an error: Upgrade failed with result failure[diffUpgrade,239] Patch didn't apply! So I figured I'd just upload the final image rather than a diff as the factory shipped firmware appeared to be some unknown number (46470) The documentation on all this is convoluted when its probably quite simple. Philip

@john-baird Can you try this? https://forum.pycom.io/topic/4022/unable-to-update-gpy-modem-firmware/4

Hi @sh4nnongoh, Please check this post for updates about the modem upgrades. Hope this helps!