cybermog

Jailbreak iPad, iPod and iPhone 4.2.1 with Redsn0w 0.9.6b4

In Apple device on 25/11/2010 at 2:36 AM

Caution: If you rely on unlock, please stay away from this update. Honestly, i only think that this update is good for iPad but your call anyway 🙂 Up to now, new iDevices such as iPhone 4G, iPad, iPod Touch 4G…can only be applied “tethered” jailbreak. Here are explanation i copied from Dev_Team blog:

  1. If you’re on an iPhone3G, old-bootrom iPhone3GS, or non-MC ipt2g, life is easy. redsn0w installed an untethered jailbreak and so nothing below applies.
  2. “Tethered” does not mean you cannot boot at all without PC/Mac assistance.  If you have not installed any tweaks that hook into important programs like SpringBoard or CommCenter, your device will actually boot. However, jailbreak programs like Cydia won’t work (and Cydia may still have a white icon).  Also, certain built-in apps that had to be moved by Cydia will fail (Safari being the most noticeable example).
  3. If you’ve installed MobileSubstrate tweaks that hook into SpringBoard or other important programs, your boot will actually fail (you’ll get stuck at the Apple logo).  You need to use redsn0w to “Just boot tethered right now”

For short, anytime your iDevices reboot or turn off, you will need to connect it to a Mac or PC then run RedSn0w, select “Just boot tethered right now” and follow the instruction to have yours working again (about 1 minute). This is quite troublesome if you need to make emergency phone call and your shinny new iPhone stuck at Apple logo 😦

What you need ?

Guide:

  1. Back up your iDevices and connect it to iTunes 10.1
  2. Hold Shift+Click Restore (Windows) or Option+Click Restore (Mac) then select your respective 4.2.1 firmware
  3. Wait for the upgrade finish and your device start up with nice Apple wallpaper. You can restore back up if you want
  4. Run RedSn0w then select 4.2.1 firmware you had just downloaded.
  5. Next,wait,continue…
  6. Turn off your devices then follow the prompt to boot into DFU mode and wait
  7. Finish ! You device will restart with Cydia not working 😦 Do NOT panic !
  8. Turn off your device and run RedSn0w ONCE MORE TIME
  9. Follow the same steps except in the selection screen: Deselect “Install Cydia” and select “Just boot tethered right now” 
  10. Continue, wait…Your device will boot up with “Pineapple” logo. Done !
  11. Everytime, your device restart or turn off repeat step 8 to 10

In case you want more detail, here is YouTuBe help clip from A to backward Z:

Have fun !

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