xHP Flashtool

[Zombiedad]

Hi guys,

Really need some help here.   New to the forum.   I see lots of you are experts here. 
I have a 2011 F10 535i,  car was running fine without any fault codes but recently  I use the xHP Flashtool to code the transmission,   after I coded it It shows the "Chassis Stabilization Failure".  This error will disable my sport / sport+ mode.   I can only drive normal mode.     Some people say it could be the wheel speed sensor, but in ISTA software I don't see any option to check that.   Also i think my car is little too old with the firmware/software.   ISTA software update also grayed out.    Is there way to update my car's module firmware/software.

Even though delete the fault code.   Within 1 min, the Chassis stabilization malfunction error will come back.    

I just want to get rid of that error and able to use sport/sport+ mode.

Any help will be great.

Thanks
Ced