How to jailbreak and unlock 3gs 4.0 iOS?

[Azatmuhammet]

Hi guys, plese help me to jailbreak and unlock iphone 3GS with old bootrom
Model: MC131B
Serial number: 85931MXXXXXX
SW: iOS4
Modem: 05.13.04

 

[malikraghav]

use sn0wbreez 1.7 to restore ur iphone

 

[Ayash Wadhwa]

Solution not available yet !

 

[subeesh1987]

brother your model is starting is mc. and its the new boot rom. not supported for flashin custom firmwares.

 

[Azatmuhammet]

But 4-th and 5-th digits of it`s serial number 31