@Virgo Unfortunately, this is not my case. AP and Controller are in the same vlan, so there is no problem of port due of use of the same L2. Also thsi problem is happening only with this specific AP...

@Virgo Yep, I've tried manual upgrade, same error of automatic update. Here some screenshoot : procedure start, and after some minutes I've got the error ERROR :

Omada SW Controller (version 5.9.31) ask me to upgrade firmware of two EAP225-Outdoor(EU) v1.0 These AP are in version 5.0.9 The new firmware will be 5.1.0 Anyone have the same issue ?

@PavelV take a look to this 3d ..... It solve my problem. https://community.tp-link.com/en/business/forum/topic/267794?replyId=606514