@gics you will have to Forget the device from the controller. Loginto it in standalone mode. Downgrade the firmware there. Then you can re-adopt and update to .16.

@Clive_A Update: It is resolved. Solution: As recommended, I forgot the first switch after setting up an old SG2008P and migrating the connections to it. After it was reset I logged into it in...

@Clive_A The error when trying to downgrade is: Upgrade Results Failed (1) 083200-SG3210XHPM2 upgrade failed: The upgrade file is invalid. Please select a correct file. I was waiting to hear back...

Clive_A wrote Hi @W38122077 Thanks for posting in our business forum. W38122077 wrote @Clive_A i was unable to downgrade to the previous official releases. Manual upgrade by uploading the firmware;...

@Clive_A i was unable to downgrade to the previous official releases.

@Clive_A I can remote with you. I'm in the US East timezone (UTC-5:00). I'm free this afternoon 1/6 from 1-4pm or tomorrow 1/7 1-4pm. I DM'ed you the info And just so it was recent, I re-attempted...