WatchGuard AP320 (Mojo C75) - new OpenWrt versions?

Hello, sorry if I’m light on details (I would have opened an issue otherwise).

I have this AP, and I tried flashing 25.12 on it but uboot failed to boot the TFTP image (LZMA error 1).

I then installed 21.02 successfully. Is it safe to upgrade or will I get the device stuck in a bootloop?

I’ve read on GitHub that the error can be caused by a kernel image that is too large.