- 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 | C328B136 | 09.02.2018 | 1.57 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B134 | 10.04.2017 | 3.81 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B131 | 04.12.2016 | 3.17 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B129 | 14.11.2017 | 3.16 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B128 | 31.10.2016 | 1.63 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B127 | 29.03.2016 | 1.61 GB | Buy
|
| L21 | 5.1 | 3.1 | C328B126 | 19.02.2016 | 1.59 GB | Buy
|
| | | | | | |
![TAG-L21 | Huawei GR3 (Enjoy 5s) [Stock Firmware]](/img/MB5.png)