Upgraded Aruba AP-303H by flashing new openwrt-24.10.0-ipq40xx-generic-aruba_ap-303h-squashfs-sysupgrade.bin via Luci console. All settings got retained.
First attempt to flash the same did not upgrade. It just go rebooted. But version remained old.
Tried again and it got upgraded.
Upgraded Raspberry pi 4 (which was on 24.10.0 RC4) with owut upgrade. Except it did not retain my custom service (/etc/init.d/) and the issue on cmdline.txt it went well.