[Jon2555]

Thank you for reply.

And sorry for being impatient, I would wait if I only had recived any kind of response.

Tried to flash but again, I got wrong signature error. That's the case for every version I found(there are four of them). But I have problem entering recovery.

Generaly speaking, It's behaving very strangly. One time I enter recovery with no hassle at all but another time it seems impossible doing so despite trying every possible button/usb/splash image combination. I noticed that lenght of time when purple light is on greatly varies and that it shows up only if usb cable is inserted. Could you tell me the right procedure?

I did erase data/cache in the end but it didn't help because I made changes in system partition.

EDIT: I've got reply from sales office with link to the newest rom version but it turned out(entered recovey at last) that's also not correct firmware version, neither it is the one you sent me(wrong signature error in both cases).