[nickohlie]

Coming back to this thread few months after the update from BMW...

Ever since the update the car did not become slower as i initially thought, however, its like the car hates the jb4 now, throws up bunch of codes, has given a CEL once, and drivetrain malfunction multiple times. I had tried uploading jb4 latest firmare in hopes car will adapt, and it hasn't, same problem continue to occur.

Worth mentioning is that until this update i had the jb4 for 4-5 months on the car and NEVER had any problems, not one CEL or drivetrain malfunctions pop up.
Literally ever since the update problems started...

Not sure where to seek help, can BMW load the previous software? (im sure this not possible but im desperate at this point)
or Should i completely uninstall the jb4 and install it again?

PS Many say the JB4 should not be installed while doing this update to which i agree, problem is when i took my car i had no clue it will be getting an update, car was there just for oil change, all i did is deactivate the jb4 by putting it in map 0 before leaving the car at the dealer.