unable to disable start/stop system on F11

[pan_sattan]

but in my unit I don't have, or I dont see it... 
There is present just something like TC_RESERVED_BYTE3_BIT4

should I firstly update firmware in CAS unit or even whole car to newer I-step? Which one is recommended? Or what should be wrong?

Thanks for any suggestions...

update fw in CAS, however you may need to update others too or CC will not work anymore

yeah, I plan to do that... waiting on power supply will arrive.
Hope that it helps