few hours ago i ask my frend, he told me then he yesterday downgrade K800 cid 51 (as i remember, posible it was 52) back to cid49 using cruiser and credit for it. he just flash main and fs, (finalize of coz too) ewerything work fine and without problems.

he told me also, then somtimes downgrade cid is imposible, because some new firmware have "sumprises" and back cid to OTP number can damage mobile.
he say also then downgrade cid is normal operation, and he doing that from time to time.

in few days i will ask other my frend about that problem.

so i was able to downgrade, my frend too
how to explain that ?