cnMaestro - cnPilot E500 - Firmware verification failed

Hi all,
I’m trying to update my cnPilot E500 APs from cnMaestro (hosted by Cambium).

Current firmware version:
Trying to update to or 4.2.1-r12 results in the error message “Firmware verification failed”.

I tried to download the img file for 4.2.1-r12 and apply it manually from the webinterface of the AP, but I get the same error message.

Any advice on what I could do? Maybe I have to chose a different upgrade path to get to the recommended 4.2.1-r12 ?

Some of my APs are wirelessly uplinked to each other, so I want to be sure that the chosen firmware will work, else I will have to climb some ladders :wink:

Thanks in advance for your help.

Best regards,

1 Like

Hi pbecue,

Sorry for inconvenience, E500 device upgrade from to 4.2.1-r12 should work fine without any issue.
Please check your inbox for more details to debug the issue.


For devices being upgraded from 3.x.x.x to 4.x , please make sure that you are using *.img image file.

Please check your internet connection and firewall settings