Good unlocker for 8390

[ryann46]

Can anyone help me? I wanted to know what's a good unlocker to get to unlock my 8390. Is it good to get the ones that don't require a pc or it's better get the ones that use a pc with cables? Also, where can I get one for a good price. Thanks for the help.

[Alinus]

try dct 4 tools by Techtron.
is free.
on 8310 unlock up to version 5.57
i don't know about 8390 becouse they are not used in my country.
buy a 8310/6510 mbus/fbus cable with autoswich