[mj_mj_mj]

Ok, will be getting this car here in a week or so from the local BMW dealership (yep, do quite a few work for them)
BMW F07.

The car had cluster stolen. They installed a new one, Ista as always, updated the entire car as sw was old. Failed programming at cas. With old cas ignition is always on. New Cas was ordered and they mounted it. Mileage 0 on both cluster and cas..

Im thinking about the best way to go about this.
So far I have the following ideas. 

1. Try to flash the old CAS via Esys. Maybe it will kick it back to life.
2. Manipulate the mileage to the correct on either cas or cluster (it will automatically take the highest mileage from either unit afterwards) 
3. Read the eeprom from the old cas and inject to the new perhaps, but guessing it will fuck things up..
4. Read cluster 6wa with hextag or im608 and adjust it there.

I have autel Im608, Esys, standard tools, hexprog and so on...

How would you go about solving the issue?