Huawei Honor 8A JAT-L29

  1. Download the upgrade package that matches the phone model,
  2. extract update.zip from the package, and copy update.zip to the root directory of the SD card (the file name must be update.zip),
  3. Select File Manager>SD Card, verify that the update.zip file in the root directory of the SD card is proper,
  4. Tap and select Settings System Updates
  5. Tap and select System updates, then touch INSTALL
  6. After 15 seconds the phone automatically to upgrade