The fact that one can not change iMini programs from an external controller via program change messages is really a bummer. The synth sounds really good for a VI, but I can't really recommend it to anybody, except to use as a toy.
Until remedied, this is putting me off buying the iSEM (no program change on that either) and any further Arturia iOS products. Nlog Synth Pro apparently does this fine, as does Magellan, which is now my go-to iOS synth for live gigs.