Meizu Engineer / Factory
M88 domestic version 6.0.2.0Y (for replacing the motherboard)
M88U Unicom customized version 4.5.4.2U (for replacing the motherboard)
M88 Unicom customized version (without replacing the motherboard) 4.5.4.2U
M88 Mobile exposes Flyme OS 4.5.3.2C (for motherboard replacement)