Install OpenWRT Groove A-52HPn Mikrotik

I need to install openwrt on a Mikrotik Groove A-52HPn. No firmware so far has worked.

Is there any indication, anywhere, of it being supported?

Have you tried booting via initramfs or;a=commit;h=3519322e6238913eeae717a598c9760ddf40436c

Potentially it was added when the SXT and RB911 series was added as they are a similar chipset etc.

Your biggest issue going forward is 16mb of flash and the 64mb RAM