I try change mileage in cluster bk3t-14c226-ac,
when i try to add kilometers they works well, but when i try to roll back - i got message in language what i dont understand

So i tried to reset mileage - i lost token and now i have 999999km on dash

I readed eeprom from cluster, can somebody set 64512kilometers ? I compare dump with another dumps from internet and they looks good only mileage area is bad (FF).
And what can i do to improve this function in UCDS ?