@dluke, your method is not working for me. I have confirmed which daten file is the one being used to write (for my 09 M3, it is FRM2_E89.C09), changed line 1 from (01) to (06), then processed the ECU with the MAN file created from the TRC I read when going into the NFRM module.
I confirmed that triple turn signal was disabled in iDrive, and that the MIND_ANZ_ZYKL_TIPP_BLK option was set to "wert_01".
Upon finishing, turned off the car, turned it back on and tested the blinker and only get 1 blink.
What am I doing wrong?
Anyone else having the same problem?