The following are instructions on how to jailbreak your iPhone 3GS or 4, iPad or iPod on iOS4.3.5 using Redsn0w. Note that updating to 4.3.5 will update your baseband and you’ll lose your unlock.
The complete guide after the break.
Tools You’ll Need
Redsn0w 0.9.8b3. Click here.
Official iOS 4.3.5 IPSW file. Click here.
Official 4.3.4 Firmware File. Click Here.
Step One
Update to the official 4.3.5 firwmare using iTunes.
Step Two
Follow steps 4 to 8 from this guide – Here. Just point the redsn0w to the 4.3.4 firmware instead of 4.3.3 or 4.3.5.
Step Three
1.To boot the phone after a restart, simply open up redsn0w and point it towards the 4.3.4 firmware file.
2. Hit next. Connect iPhone and press next.
3. Select just boot tethered right now in redsnow and press next.
4. Follow the on-screen instructions and when the phone reboots it will boot into the springboard instead of the emergency screen.