Glad to hear you've come this far.

I'm surprised you don't have BT. I wonder if this will cause problems. I suspect all CIC E70's had BT. I wonder if there is a coding variant for CIC w/o BT?

Do you know the version No. of the SP Daten files you just reinstalled? They need to be close to or newer than the built date of the donor CIC.

Does the CIC boot at power on?....BMW Logo on the 2012 CIC in my '08.
Do any iDrive functions display? HVAC, Settings, Vehicle Info....etc?