I see others have had the similar problems but cannot see any solution. When I fitted my IP22 last week the update did, after several attempts, succeed. I have come down today and switched the unit on and it's asking to do the update again. This fails at 93%. The failure is X88 - Communications error. Vreg Ack timeout. I have tried both my mobile phone and a tablet both with the same result. I previously used a single output device for the house batteries with no problem. I have tried starting up with the batteries isolated. Always the same.
