how to downgrage iphone 3g vit 6.15 baseband nd 3gsto 4.2.1

[jamesjerss]

For ip3g

1, put yur mobile in DFU vit IREB. download ireb http://hotfile.com/dl/125818297/0d55...EB-r4.zip.html

2, for ip3g vit ipod baseband 6.15 just restore vit original 4.2.1 ispw.while restoring yu vil get 1015 error nd yur mobile go into recovery mode.

3,den jailbreak vit redsnow.after finish jailbreaking yur mobil vil continue in recovery mode.

4,open tiny umbrella nd click exit recovery tats all.

For ip3gs


for ip3gs run tss server using tiny umbrella nd restore coustom or orignal 4.2.1 ispw. while restoring yu vil get 1015 error.den do as same gven tips for ip3g.


redsn0w for 4.2.1 jailbreak

http://www.mediafire.com/?vxweer503o6g7zu

iphone 3g 4.2.1 firmware

http://appldnld.apple.com/iPhone4/06...8_Restore.ipsw

iphone 3gs 4.2.1 firmware

http://appldnld.apple.com/iPhone4/06...a_Restore.ipsw

custom firmware iPhone 3G

http://hotfile.com/dl/94005490/d2f64....Com.ipsw.html


custom firmware iPhone for 3Gs

http://hotfile.com/dl/94005653/15b0c....Com.ipsw.html

download tinyumbrella

http://cache.firmwareumbrella.com/do...la-5.00.11.exe



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