hi , i have the mz-n505 sony md , and wekends ago have to reset the eeprom , and insert all the values in servide mode (thanks to lostinconformiti for his post) , and the Nv err was fixed when i push play in my player.But when i go to transfer one song , in the display appears ´´Nv err `` and then it shut off. Need some help to fix this problem , I think that the record adresses of the eeprom that i put in my md are diferent,why i have ver 1.400 and the adresses that lostconformati put in his post are of ver 1.200 Thank you in advance (sorry my english is Horrible)