DFU mode is needed if your iPhone is never pwnaged (used PwnageTool or Quickpwn) before whenever you want to jailbreak and or unlock it. For those already having pwnaged their iPhone further action only needs simple recovery mode.

Mac OS X 10.5.6 was released on December 15th, 2008. It disables recognition of a device (like the iPhone) in DFU mode. It is not known if this is intentionally disabled by Apple or just a bug. The iPhone Dev Team believes "this behavior is due to a kernel bug not a specific countermeasure by Apple."
All credit for the solution goes to the iPhone Dev Team - as usual, I have just developing this easy to use app!!!

One solution ist to replace two plugin kexts with the ones from Mac OS X 10.5.5 and then rebuild the kextcache. This innvolves some knowledge of the system and heavy use of the application Terminal.

This is where the Automator programm Fix_DFU_10_5_6 comes into action. I put it together to do the complete job with one mouse click. The user has to be logged into his Mac with administrator privileges (usually the account you used while setting up your Mac) and has to provide the admin's password.

The programm then:
1. checks if you are at Mac OS X 10.5.6 or better (if not will quit)
2. show a readme
3. quits all running apps (with save option)
4. backup the original files (AppleUSBHub.kext and IOUSBCompositeDriver.kext from 10.5.6) in a new folder on your Desktop
5. ask for your admin password
6. copy AppleUSBHub.kext and IOUSBCompositeDriver.kext from 10.5.5 into the desired location on your Mac
7. set owner:group and permissions
8. rebuild the kextcache
9. reboot your Mac

Right at the end the programm will tell you that the cache is beeing rebuild, just let it do its job.
Your Mac will automatically reboot when done - DFU is enabled then.


How-to (see pic below)

Download the package (zip-archive) at
Rapidshare
or
Mediafire

Unzip the archive (pic 1) and place the folder "Install_IOUSBFamily_kext_10_5_5" on your Desktop (important). Open the folder and start the Programm "Fix_DFU_10_5_6" (pic 2).

You will see the Readme box (click "OK") (pic 3), then you have to provide your admin password (pic 4). The programm then will do its job.
At the end the Finder will open another dialog box telling you that the cache is beeig rebuild (pic 5). Klick "OK" or just leave the box alone. After a couple seconds your Mac will reboot automatically - done, DFU is enabled again.

On the Desktop you will find a new folder called "Backup_IOUSBFamily_kext_10_5_6", it contains the two 10.5.6 files

Hope this helps,
v.


p.s.: If you are interested in the Automator source, just drop me a pm with your e-mail address

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iPhone 3GS factory unlocked (3.1.2; Blackra1n, Cydia, OpenSSH, custom 3.0 ipcc file (no sig), tethering hack by Dev team, 32 GB)
iPhone 3G (3.0.1; Redsn0w 0.8, Cydia, OpenSSH) 16 GB

Awesome, great work!

can something like thia be used for the borken power wake button for windows.....

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iphone 2g at 3.0 using unofficial sim
changed commboard at 1.1.4

Thanks for the great job!! Appreciated.

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1.1.2 OTB UK •> 1.1.4 •> 2.0 •> 2.1 TIM Italia

just wondering if this fixes this, thanks.

This totally safe? Any point in keeping the backup files?

Does this work for the late 2008 unibody MacBook line?

This is for Mac users only to solve the DFU problem at Mac OS X 10.5.6

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iPhone 3GS factory unlocked (3.1.2; Blackra1n, Cydia, OpenSSH, custom 3.0 ipcc file (no sig), tethering hack by Dev team, 32 GB)
iPhone 3G (3.0.1; Redsn0w 0.8, Cydia, OpenSSH) 16 GB

All the mods with mac have tested this and it works great

It drops a backup on the desktop before it removing the 10.5.6 files.

As far as I know its not been tested on any unibody macs, and I wouldn't recommend anyone trying it unless they know what there doing.

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@ DHL & iamse7en

I dont have one to try. I have seen reports that the 2008 unibody MacBook line usese the kext we now find in 10.5.6.
I guess it is possible to make DFU mode working there with the programm - BUT: I am not sure, cant test it.

If one of you wants to give it a shot, let us know.

You will be at you own risk, we had no chance trying it!!!

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iPhone 3GS factory unlocked (3.1.2; Blackra1n, Cydia, OpenSSH, custom 3.0 ipcc file (no sig), tethering hack by Dev team, 32 GB)
iPhone 3G (3.0.1; Redsn0w 0.8, Cydia, OpenSSH) 16 GB

nicely done Volks.

N41

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