New Mk3 GF WW2 KG12 Grip Not Recognised

[JRVx37]

Hi there. I'm hoping to get some technical support from VKB. Just received a gunfighter Mk3 WW2 KG12 grip and attempted to install it directly onto my GF Mk3 base. Opened VKBDevConfig and KG12 grip not appearing or registering. Only my older GF Mk3 MCG Ultimate Grip appears, which I have been using on 20mm extension successfully for many months now. My older MCG Ult grip is recognised on Mk3 base in VKBDevConfig with no problems, both before and after attempting to connect new KG12 grip directly to GF3 base. Cleaning connections with alcohol wipes and seating the KG12 firmly have made no difference. My Mk 2 black box shows a blue light on the left and a flashing red light in second spot on the right when KG12 is seated on GF3 base, which I believe indicates a connection error? Any help would be appreciated

[fallout9]

You'll need to reflash it for the new grip, then flash it back to MCGU grip:
flashing for KG12 - https://youtu.be/VnBmzpfgD_A
calibrating KG12 grip - https://youtu.be/v3FelB60Xdg
flashing MCGU - https://youtu.be/B5SoYSUYClE
calibrating the MCGU - https://youtu.be/c4WREzN19pE

Alternatively, you could flash the MKII unified firmware and you'll only need to reset to default and recalibrate when swapping grips, no more reflashing,