@Phyo-Wai-Than Here you will find all Y build for the M5.
Make sure to check if this is the correct version that you are running currently on your phone.
Also make a backup of the build you have already on the root of your phone in case something goes wrong.
Once you checked and if all it’s good you can proceed to installation
- Put the build on the root of your phone
- shut down
- Press Power + Vol Up till you see meizu logo and release
- Upgrade firmware