Proceed at your own risk!

Known Issues

Ambient Display is not working System stability issues Cannot send SMS when VoLTE is on

Navigation gesture is not working

Recovery mode doesn't work

Some apps may not function as expected when running on this Developer preview release Issue with MTP that doesn't allow you to copy rollback file from PC to Phone

This upgrade method will erase all the contents of the phone, please be sure to backup first.

1. Download the latest ROM upgrade zip package from the specified server.

2. Copy the ROM upgrade package to the phone storage.

3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> upgrade -> System upgrade completed to 100%.

4. After the upgrade is complete, click Restart.

5. Phone will boot into recovery mode to format user data, it will reboot again after formatting.

6. Update successful.​

This upgrade method will erase all the contents of the phone, please be sure to backup first.

1. Download the latest ROM upgrade zip package from the specified server.

2. Copy the Rollback package to the phone storage.

3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> upgrade -> System upgrade completed to 100%.

4. After the upgrade is complete, click Restart.

5. Phone will boot into recovery mode to format user data, it will reboot again after formatting.

6. Update successful.​