thank's for the reply nat27
i have noticed one more thing when i plug the flash in the fcmptool sometimes it shows this error
30400:unknown flash error
ID[0]: 0xC5,0xD7,0xD8,0xC2,0xF6,0xD5
why did the id change after clicking refresh this error come's back
Re: 30400: unknown flash error
ID[0]: 0x45,0xD7,0xD8,0xC2,0x76,0xD5
and sometimes i get this error also
30100:no flash in device error
ID[0]: 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
the controller seems to be working fine... the problem is that i can't seem to find what manufacturer made the nand flash as it is not written on the nand flash. Is there some way i can find out nand flash manufacturer from this id (0x45,0xD7,0xD8,0xC2,0x76,0xD5 or 0xC5,0xD7,0xD8,0xC2,0xF6,0xD5) so i can assign manual flash and LLF format this flash back
ps i don't think there soldering problem with the nand flash as it was working before i will try reheating the solder with a hot air gun today to see if it will work ...
thank's for you'r help so far man....