[RoundelM3]

Yep...this used to be the case when using Dinan flash-tuning; fortunately for me, the dealership did the Dinan flashing as well, so whenever there was a software update applied (such as during the infamous HPFP issues with N54 engines), they'd always re-flash my previous E92. Cobb's tuner, on the other hand, would not do a complete reflash, but only certain mapping paramenters. Whenever a new BMW software flash was applied, the Cobb unit could then add back their updates. Custom (FDL) coding always had to be re-done afterwards in either case.