How to find the hardware version on a TP-Link device
EAP225-Outdoor(US)_V1_5.0.5 Build 20210604

Release Note
This firmware fully adapts the Omada SDN platform but only compatible with Omada Controller v4.1.5 or above.
If you are using an old Omada controller and plan to upgrade this firmware for EAP, you must upgrade the Omada Controller as well: Upgrade Guide