Even the best ROMs have quirks. Here is the troubleshooting guide:
Issue: "Error 7" in TWRP. Fix: Your TWRP is too old or you are flashing the wrong device ROM. Update TWRP to version 3.2.x or higher.
Issue: SIM card not detected / No Service. Fix: You need to flash the "Modem Fix" zip file specific to BG2-U01. Some custom ROMs break RIL (Radio Interface Layer). Search for "BG2-U01 modem fix" on XDA.
Issue: Camera takes green photos. Fix: Use a third-party camera app like Open Camera. The stock AOSP camera HAL has color rendering issues on this specific sensor.
Issue: Battery drains fast. Fix: Calibrate your battery. Drain to 0%, charge to 100% while off, then boot into TWRP and wipe battery stats (if available). Also, disable "Mobile data always active" in Developer Options. huawei bg2u01 custom rom
Let’s assume you have unlocked your bootloader and installed TWRP.
Step 1: Download Files
Step 2: Boot into TWRP
Step 3: Wipe the System
Step 4: Flash the ROM
Step 5: Reboot & Patience
Because the BG2-U01 uses a 32-bit Mediatek processor (with limited kernel sources released), you won’t be running Android 10 or 11 smoothly. However, the sweet spot exists between Android 4.4.4 KitKat and Android 5.1.1 Lollipop.
Here are the three most stable custom ROMs confirmed to work on the BG2-U01: Even the best ROMs have quirks
Stability Rating: 8/10 Best for: Customization maniacs.
Resurrection Remix combines LineageOS stability with insane customization. You can change the status bar, animations, lock screen, and navbar gestures. It feels like a modern gaming OS but runs on budget hardware. Battery life is excellent due to aggressive Doze settings.
Disclaimer: Flashing custom firmware on the BG2-U01 carries a high risk of bricking the device. Unlike phones, the Watch 2 has no reliable "unbrick" tool due to Huawei closing the servers. Proceed only if you have a full backup of the persist partition.
Name: AOSP 9.0 Wear (De-Googled) / LineageOS 18.1 (Unofficial) Status: Beta / Community maintained Step 2: Boot into TWRP
What works:
Bugs: