Ensure your car battery is stable; do not turn off the engine during the update. 📂 Preparation of Patched Firmware Obtain the patched firmware files (usually Unzip the files directly to the root directory of your USB drive. Check Files: You should see files like metazone.bin (do not put them in a subfolder). 🔄 Installation Process Insert USB:
Connect your head unit to the PC and power it on to begin the flashing process. yt9213aj firmware update patched