Downgrading from 4.3.5 in order to unlock


hello,

iphone 3gs went crazy , had no choice restore (several freezes, unable slide lock when incoming phone call, loooong time boot, etc ... )

in 4.3.5 , jailbroke using redsnow
cydia says shsh ios 4.1, 4.2.1+, 4.2b3, 4.3.5 saved.

can downgrade in order able unlock ?
ios version ? how ?

downloaded ipsw files 4.3.2, 4.2.1 , 4.1.

if downgrade possible, jailbreak untethered 1 ?

thank
 

you can downgrade firmware have shsh saved for. either need change host files (there's ton of guides on that) or easiest way download tinyumbrella. allow downgrade firmware. 4.3.3 , below untethered. if have old baseband 3gs firmware versions untethered including 4.3.5.

however, can not downgrade baseband. way you'll able unlock installing ipad baseband. cause lose gps functionality.
 


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