AP121's stuck at HiveOS 6.4r1d

[netadmin21]

I have a HiveManager Connect account and have twelve AP121s. Five of them are stuck on HiveOS 6.4r1d. When I upgrade HiveOS it displays a "Device Update Failed" regardless of HiveOS version I choose.

Can someone please point me to the right direction please? Is there a way to get the appropriate .img file so I can do a manual update of the firmware?

Any help greatly appreciated.

[samantha_lynn]

Thank you for reaching out, I've emailed you directly with the files you'll need and a guide that reviews how to update device firmware via the Web UI instead of the HiveManager GUI. You'll need to update the devices to 6.5r3 minimum to manage them in HiveManager.