Looking for some guidance on repairing OpenWRT on my Belkin RT3200. It had been working fine for a few weeks, also running AdGuard on it. Randomly stopped working, and all settings had been reset, and 5GHz radio is not detected. I attempted to update with 'openwrt-mediatek-mt7622-linksys_e8450-ubi-squashfs-sysupgrade.itb' and see if it would correct the issues, and the router still does not see the 5GHz radio, and when ssh'd into it 'auc' does not work like it did before.
Current Firmware Version: OpenWrt 22.03-SNAPSHOT r19228-0877953235 / LuCI openwrt-22.03 branch git-22.083.69105-af8e91c
Is there a different, more stable, version that I can swap to? Do I need to do a complete reinstall of OpenWRT? If so, is there a guide to doing so? I have been flashing through the GUI
My use case is my primary router, 2.4GHz + 5GHz in USA, running AdGuard on the router as private DNS server.