8310 suprise

[seb87]

i got a blocked 8310 that was blocked on network 1,when i put a simcard of network 2 in it,it says sim registration failed, but when i put sim card from network 1,the phone worx 100%,what is up??
i tried unlocking codes,from the dct4 unlock generator,but they dont work,it says code error,can anyone help,
imei is 350999100675783

[murty]

That handset must have been blacklisted and network one havent updated there blacklist database you will probably get sim registration failed on that too soon