What I do with the LF Mini to change Patches is to send the PC and an IA command that is a CC for H9’s Active with a value of 127.

I do this for every Patch change I do, even when I don’t need to re-send the IA to activate the H9 because I can change Patches in the H9 and this will remain active unless I send another IA command with the Bypass CC.

I don’t know what Firmware version I have but I plugged my H9 to H9 Control yesterday and I didn’t see any update.