[ruslan]

thanks for everyone's help on here.
i shipped just regular priority mail as i always do. have been selling on ebay since 2002 and this is first time it happen.
i told buyer that i will check the MEID and he was fine with it.
unfortunately there is no way it seems to check if he tried to flash something wrong on it. from what i read it does seem like he flashed GSM rom on it.

Never thought of INVISIBLE seller mark, I'll do this for all my future sales.

The very upsetting thing is that I have 100% feedback and he has 97.5% but ebay only looked at the fact that he contacted me right away meaning that he didn't have time to temper with it.