- 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 | EMUI | Build Number | Region | Size | Buy |
|---|
| L21 | 5.1 | 3.1 | C578B126 | C578 | 0.98 GB | Buy
|
| L21 | 5.1 | 3.1 | C578B125 | C578 | 0.99 GB | Buy
|
| L21 | 5.1 | 3.1 | C578B124 | C578 | 0.98 GB | Buy
|
| L21 | 5.1 | 3.1 | C577B118 | C577 | 971 MB | Buy
|
![CUN-L21 | Y5II [Stock Firmware]](/img/MB5.png)