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![Y221-U12 | Y221 [Stock Firmware]](/img/MB5.png)
Y221-U12 | Y221 [Stock Firmware]
- All firmware are official and can be use to install via memory card or OTG Flash Drive.
- Be careful to select the appropriate Firmware for your devicemodel, wrong firmware may damage your device.
- Downgrade is not allowed in Huawei devices and may cause difficult problems.
- You can only install the firmware which has the same region with your device.
| Model | Android OS | Build Number | Region | Size | Buy |
|---|---|---|---|---|---|
| U12 | 4.4.2 | C442B103 | C442 | 464 MB | |
| U12 | 4.4.2 | C328B102 | C328 | 1.18 GB |