I have a problem. My N900 usb socket was broken so I gave it to local service. After rapair I noticed that my mainboard might have been replaced during that service. I have scratches on camera lens and in some hidden place. These scratches "magically" disappeared. IMEI number is correct and data on eMMC are the same. I had lock code - it is also correct. But I don't know where is it stored. So there is a question - is there any chance to replace or copy eMMC memory and lock code; to change IMEI and so on?
And generally - how to check if my mainboard wasn't replaced?