Re BIM tap tempo light not blinking when set to LFO sync: I’ve had the same issue since day one and this is a known bug to Denis. He said he’d issue a fw update when he’d have time. Presumably this won’t happen until after Boum is released.
If you have further questions, I suggest you contact Denis directly via email (if you haven’t already) – he usually replies in a few days, though he rarely comes to the forum. No wonder, he’s been busy with finalizing BOUM for us! :)