use any iphone explorer (itools , DiskAid , ifunbox , iphonebrowser , iPhoneExplorer ... )
copier mobilesubstrate.deb & ultrasn0w.deb to location – /var/root/Media/Cydia/AutoInstall
after restar your iphone and restart again
Unlock your iPhone 3g or 3gS no wfi 100-100.7z download - 2shared