TP-Link EAP225 v3 upgrade not working

I am trying to upgrade OpenWRT on two TP-Link EAP225 v3 routers from OpenWrt 21.02.3 r16554-1d4dea6d4f (currently installed on both of them) to 22.03.2 r19803-9a599fee93 (Downloadable here: ). But after trying to upgrade either by LuCI or by CLI it acts like it is upgrading, then restarts itself, but it doesn't upgrade and remains at version 21.02.3.
Am I doing something wrong? Where's the problem?

Radim Kohout