I woud like to update/upgrade our Wing AP7522 APs from 220.127.116.11 to 18.104.22.168.
I using the express UI.
When I update the virtual controller, only this one will be upgraded after the progress. The other three will not.
I have tried several options:
1. I tried upgrade the VC (this should be the standard way, right?)
2. I tried to downgrade to 22.214.171.124. first. I thought it might still be the same bug. please refer: https://gtacknowledge.extremenetworks.com/articles/Solution/WiNG-Express-device-will-not-upgrade-to-...
3. I tried upgrade the attached APs over its own Webinterface. When I do this, the AP will startup with the new Firmware then goes down by itself and startup next with the old firmware.
What am I doing wrong? Thank you for your help in advance