[CROSP]

Hi, I have an issue with saving units.
My car came from USA, I live in Ukraine, so we have different units used, we used to Km, C, bars, l/100km.
Someone already removed 853 entry from FA and added 6UD in order to unlock Russian language.
But when I try to change any settings in the Language/Units menu, changes are not saved.
I coded 853 back, car interface became English, but I wasn't able to save settings as well.
I coded 6UD back, but still the same issue.
When I bought a car, some units were translated on the KOMBI like millage (in Kms), but now I have everything in mills, F and mpgs and not able to change settings.
Also, I noticed that some other options like 12/24 time are not saved as well.
What can cause this issue?
I would be grateful for any help.

P.S. I am selecting options by pressing on the joystick.

[CROSP]

Could someone suggest how can I reflash the firmware to a ECU?