How to Downgrade iPhone Firmware 1.1.1 to Old Crackable and Hackable 1.0.2 Version
Apple released a firmware software upgrade for Apple iPhone to version 1.1.1. Other than a few features enhancements such as iTunes Wi-Fi Music Store, the new iPhone OS also has its fair share of negative points. One of the major annoyances is Apple has disabled ability for hackers to unlock SIM-lock and make illegally hacked or unlocked iPhones inoperable, becoming a useless toy, or ‘brick’. Besides, cool iPhone hacks to install and use third-party applications on iPhone also no longer usable and not supported with the new firmware.
To recover your iPhone from the hell of v1.1.1, doomed hacked iPhone users need to downgrade the operating system in iPhone to older version, i.e. v1.0.2, the version immediately precedes 1.1.1, at least until v1.1.1 is cracked. Initially it’s announced that it’s not possible to downgrade after upgrading to firmware 1.1.1, but apparently hacker named Kmac1985 has succeed to revise steps to unbrick the ‘irreversible’ firmware again. And soon easier method is released, which is quoted below.
The instructions will downgrade iPhone’s firmware to 1.0.2 from 1.1.1. However it won’t downgrade iPhone modem baseband (which is still version 04.01.13_G after downgrade and not version 03.14.08_G used in firmware 1.0.2) which means that the upgrade won’t fix 0049 issue and cannot re-unlock the iPhone. Which mean you will need a valid AT&T SIM card to use every functions on iPhone including phone calls, voicemails, EDGE (GPRS) and SMS, else you can only use the Youtube, iPod and WiFi Internet features. However, best part is that the phone is activated and all apps and 3rd-party software is working.
- Download the iPhone1,1_1.0.2_1C28_Restore.ipsw restore image from Apple. On a Mac, do not unzip the file, iTunes will do this automatically.
- Connect iPhone to the dock.
- Hold down Power (top or Sleep/Wake) and Home buttons for about 10 seconds until phone turns off (screen goes dark) to reboot iPhone.
- Right after iPhone is off, release the Power (top) button but continue to press and hold the Home button. After about another 10 seconds, iTunes will detect iPhone in restore mode and automatically launch itself to restore firmware to the phone.
- Press and hold down SHIFT key (in Windows) or Option/ALT-key (in Mac) when clicking the Restore button in iTunes.
- Select the firmware 1.0.2 file (iPhone1,1_1.0.2_1C28_Restore.ipsw) that is downloaded from first step.
- Wait for the restoration process to complete, and ignore any error at the end of the process. Once restoration is done, the iPhone screen should show “Connect to iTunes” message with a yellow triangle.
- Run AppTap (Installer.app) to jailbreak your phone - it will restore it to a working 1.0.2 firmware it even though you get errors.
- Run AppTap again to actually install the installer.app.
- For AT&T Users, reset iPhone before start using your phone again. Failure to do so may result in you being charged for your “free services.”
Share and contribute or get technical support and help at My Digital Life Forums.
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Entries (RSS)
October 1st, 2007 19:47
[...] latest iPhone software update! If you accidentally upgraded and ‘bricked’ your iPhone, downgrade the firmware. Get help or contribute tips or tricks at My Digital Life [...]
October 1st, 2007 19:49
[...] Downgrade to iPhone old firmware software. Get help or contribute tips or tricks at My Digital Life [...]
October 4th, 2007 11:52
[...] Well, the steps are actually pretty similar to how to restore the iPhone normally, and the steps to downgrade from 1.1.1 to 1.0.2. [...]
October 11th, 2007 06:26
I bought my iPhone and it had software 1.0.2 on it. I then upgraded to software 1.1.1 when it was released. Today I tried to downgrade to software 1.0.2 but after a good 40 tries I gave up because I kept getting the iPhone “iPhone” could not be restored. An unknown error occured (1). I did it in the black screen restore mode and the iTunes logo + cable restore mode and nothing works. Any help would be greatly appreciated ! Thank you.
October 15th, 2007 02:55
ok i followed the instructions and did everything, the iphone did everything it was supposed to, but after running the apptapp the second time and being told it was done and completed, nothing has happened to the iphone. it is still saying “no sim card installed” and stays on that screen.
what should i do?
using XP
October 16th, 2007 13:20
i can’t Downgrade my iphone
can every body teach me how to do it by email
pleas
THANK YOU VERY MUCH!!!
nyu.99@hotmail.com
October 31st, 2007 01:52
i need help with downgrading my iphone it would be greatly apprciated if i had some tips on doing so… windows user
November 15th, 2007 08:49
I just bougth the phone I started by pressing Power (top or Sleep/Wake) and Home buttons for about 10 seconds until phone turns off (screen goes dark) to reboot iPhone. ok and then I relesed the power button and held down the home button and it whent black!!!! and now I can’t switch it on!!!!! WHAT!!!! NOT MY BEAUTIFULL iPhone!!!!
December 27th, 2007 14:20
[...] has introduced a new firmware upgrade 1.1.1 for iPhone which is officially irreversible (although workaround instructions to downgrade to version 1.0.2 has emerged). And once updated, iPhone is uncrackable and thus users can no longer jailbreak or install useful [...]
July 14th, 2008 08:13
I tried all these steps and now my iPhone won’t turn on neither. I have tried these steps plenty of times and the same “Unknown Error” comes up. Can someone please help me fully fix my iPhone again by E-Mail: L13VANO@LIVE.COM
Thank You
August 4th, 2008 08:33
Ahh. Thank you. All I needed to know was how to select a seperate file to restore from. Those sneaks at macintosh. Making you hold down shift without telling you. arg! they make me so mad! The Itouch 1.1.5 dosesnt allow u to jailbreak. like wtf? but I got downgraded back to 1.1.4 and feeling proud cause I can write apps again