We’ve gotten a lot of feedback from users who can’t launch a DFU ramdisk because their iPhone home/power buttons are broken or intermittent. We’ve added a new redsn0w feature that lets you enter DFU mode as long as your phone is healthy enough to restore to a normal, everyday IPSW. You don’t need to be already jailbroken to use this method.
How to Put Into DFU Mode With Broken Home / Power Buttons
In redsn0w, go to “Extras->Even More>DFU IPSW” and select an IPSW that is currently being signed for your device and that you’d normally be able to restore to without any hacks. redsn0w will create an “ENTER_DFU_” version of the IPSW that you can restore to just like any other IPSW, except that now you’ll be dumped into DFU mode towards the end of the restore
WARNING : your screen will remain completely black.The only way to even know its on is that iTunes and redsn0w will detect it!.
Here are the download links.
- redsn0w 0.9.14b2 (OS X)
- redsn0w 0.9.14b2 (Windows — run in Administrator Mode)
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I have iPhone 3G, broken power button, just managed to get 4.2.1 jailbroken with broken power
button, and downgrade the baseband! (I had 4.0.1 with jailbreakme, but I will tell you all how to get 4.2.1 JB)…
What I did was MAKE SURE iTUNES HAD
A BACKUP, then shift-restore the ios 3.1.2 firmware to downgrade the
baseband, then use tinyumbrella to kick out of recovery mode or errors.
Then I restored the ENTER_DFU 4.2.1 firmware to get into DFU using redsn0w-0-9-14b2 – click extras, even more, then DFU-IPSW.
Then I used Sn0wbreeze v2.9.6 and made a custom firmware (advanced, to NOTupdate the baseband). Next, in Sn0wbreeze, I clicked IREB, then NO (notapple 2 tv), and it put my iPhone 3G in Pwned DFU mode. Next I opened upiTunes and did the shift-restore to the custom Sn0wbreeze firmware. Now I have jailbroken with cydia iPhone 3G 4.2.1 with broken power button.
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What to do if itunes cant find the device