For the original Factory firmware and BF3.5.X firmware, please use the bellowing Diff
Mobula7 HD Frsky for Original factory firmware or V3.5.X
Mobula7 HD Flysky for Original factory firmware or V3.5.X
Mobula7 HD DSMX for Original factory firmware or V3.5.X
Mobula7 HD No RX version for Original factory firmware or V3.5.X
For the official Betaflight firmware v4.0.0 or v4.0.1 or v4.0.2 and latest, please use the bellowing Diff
Mobula7 HD Frsky for Betaflight V4.0.X
Mobula7 HD Flysky for Betaflight V4.0.X
Mobula7 HD DSMX for Betaflight V4.0.X
Mobula7 HD No RX version for Betaflight V4.0.X
These Diff documents also compatible for Crazybee F4 PRO V1.0 and Crazybee F4 PRO V2.0 and V2.1 , but not compatible for the Sailfly-X(Special setting diff)