Is not possible as muiband 3 wouldn't support more firmwares as mi band 4 is launched and mi band 4 also would not support more firmwares as mi band 5 is going to launch.
Is not possible as muiband 3 wouldn't support more firmwares as mi band 4 is launched and mi band 4 also would not support more firmwares as mi band 5 is going to launch.