Download RAW firmware from ASUS support. Use fastboot flash raw firmware_raw.zip or the ASUS Flash Tool.
If your chosen ROM does not include Google services pre-loaded, repeat the sideload command with an open-source immediately after the ROM finishes installing. asus rog phone 6 custom rom
After rooting, OTA updates will not work automatically . You must manually download firmware files from ASUS, place them in /sdcard/UL-ASUS-Al2201....zip , and reboot. Then re-root after each update. Download RAW firmware from ASUS support
Before proceeding, understand the significant risks involved: place them in /sdcard/UL-ASUS-Al2201....zip
(Optional) Flash GApps if your chosen ROM does not include Google apps pre-installed. Reboot the system. Risks and Disadvantages to Consider