Reformat USB to FAT32 with 4096-byte allocation unit size. Use the GPS slot, not USB1.

| Issue | Fix | |-------|-----| | GPS takes 2–3 minutes to lock | Download GPS Test and clear AGPS data | | Bluetooth contacts don’t sync | Pair phone after boot, not during boot | | Steering wheel controls double-tap | Re-learn keys in factory settings (password: 1234 or 8888) | | “8227L Demo” watermark returns | This is cosmetic – hide via DemoHider APK (root not needed) |

Updating to the Android Auto firmware 8227L offers several benefits, including:

Updating a head unit carries a risk of "bricking" the device. Follow these steps carefully: 1. Identify Your Hardware Check your device information in . Ensure the chipset is 8227L (or AC8227L).

You can access the "Factory Settings" (usually by tapping "Factory" or entering a code like 8888 or 3368 in the settings menu). Here, you can adjust: