I had this problem as well in my 550i. They updated the software stating that the code for the faulty fuel injectors wasn't present. They checked the fuel injectors as well, and said they were fine. I haven't really had any problems with the car. I was a bit paranoid when I got it back, and I thought I felt the engine misfire - I pulled over and re-started the engine and no further issues. I'll be interested to see what happens to those of you who had the injectors changed and those who only had the software update.
2012 F10 550i M-Sport | Dark Graphite II | Hex Aluminum | Black Interior | Cold Weather | ARS | HUD | Side and Top View Cameras | BMW Apps | Premium Sound | M5 Style Spoiler | Rho-Plate | Dinan Stage 2 Tune | Dinan Suspension| Dinan Shockware | BMWPedals | 70% Crystalline Tint