The folks over at Icom released a firmware update today.
It looks to be a fairly minor change, but you can decide that.
From the change log:
Improved to enable forcing an All Reset by connecting an external power source (*) while holding down [RIT/ΔTX] and [XFC], even if you cannot turn ON/OFF the transceiver by using the [POWER] key.
kd0hbu.com 