How can I set custom values for M1/M2 on my Gamesir G7 SE?

Hold the M button plus the desired M1 or M2 button simultaneously for three seconds, then tap the intended button to map. The indicator turns solid once a value is set.

From the official Gamesir G7 SE Wired Controller manual, page 3

Have a follow-up question?

Answers from the official manual.

Common questions