TL-SG3210XHP-M2 firmware update issue
Hello. I'm stuck. My TL-SG3210XHP-M2 v1's are running 1.0.15. Got a notification on my controller (5.15.8.1) that 1.0.16 was available. Attempted to update and it failed. Post failed update switches showed disconnected in controller but did appear to be functioning. Had to power cycle them to get them to connect to the controller. Came to forum and saw similar reports and saw to downgrade to last available on the support website and then update.
Downloaded 1.0.13 and attempted to apply it via the Device->Config->Manage Device->Custom Upgrade but that failed saying it an invalid file. Switches showed disconnected after that but seemed to be functioning and I had to power cycle them to get them to connect to the controller.
Then I uploaded the firmware via the Global View->Firmware->Upload Firmware for Upgrade screen and scheduled the upgrade from there. This also failed, resulted in disconnected status on the controller and a power cycle to reconnect.
Advice?