I've a customer with two EAP115 v4 access points all adopted with an OC200 controller.  The controller firmware was updated and the two access points now show as disconnected due to the firmware being incompatible with the new controller software.

I intend to update the two EAP115 to the latest firmware for them which is EAP115(EU)_V4_5.0.4 Build 20220216.  

I understand to do that I can login to the management interface for each AP and use the Device Account credentials listed in the Omada Controller settings as login.  However with the access points already adopted to a previous version of the controller is it possible to update the firmware via a direct login to the AP?  Normally when I've tried to access a managed device on the Omada network it says the device is managed by the controller but I can't remember if you can do anything with the device once logged in.

Also the guidance for updating via the WEB GUI states to access the EAP using http://tplinkeap.net but if there are two APs in the network how does that address know which one to access?