Looks like it might be supported by OpenWrt soon: https://openwrt.org/toh/tp-link/tp-link_festa_f52-outdoor_v1
Status: Device support is proposed in OpenWrt PR #24903 and depends on firmware-utils PR #74. Neither PR has been merged at the time this draft was checked. No official OpenWrt image is linked here. Do not flash an EAP225-Outdoor image to the F52-Outdoor merely because their hardware is similar.