[DoerrFan]

Originally Posted by poetic_folly

KMAC over at hackint0sh has found a way to downgrade from 1.1.1 to 1.0.2. Here's the skinny:

• Start iTunes and plug in your iPhone which is running the 1.1.1 firmware.
• Hold down the Sleep and Home button for 10 seconds. Allow the phone to power off, but keep holding down the buttons. After 10 seconds, let go of the Sleep button, but keep the Home button pressed until iTunes sees your iPhone. The screen on your iPhone should be displaying nothing right now.
• iTunes will ask you if you want to restorea. Hold down Option or Alt, I forget which (Shift if you are in Windows), and click restore. When iTunes asks you what file you would like to restore from, navigate to your 1.0.2 folder. You may have to rename that file to .zip and uncompress it. It will begin to restore.
• When it completes, you will get an error. The iPhone will display the yellow triangle on the screen. Leave iTunes open, and run AppTapp. This may give you an error, but you should see the "Activate iPhone" screen after.
• Run AppTapp again. If the iPhone isn't being recognized, restart the computer and then run AppTapp for the second time.
• Congrats! You now have 1.0.2 again! iNdependence and all other modding apps will now work.

This has been verified with iTunes 7.4.3.1.

Wiki here.

hackint0sh

UPDATE: Not confirmed yet, but for those having the "incorrect SIM" issue after dowgrading, try this (thanks, Doerr)

Haha thanks for putting me on the top page, i feel special but i was referring to someone asking how to change his IMEI back to normal.

[Murfunit]

Originally Posted by RANE2001

i AM ABOUT TO THROW THIS PHONE OUT THE WINDOW. I have tried to hold the sleep and power button and once it goes black I release the sleep and hold the home but nothing happens the screen just goes black. my phone restored back to its original state but when I try to get it to restore again it wont do this please help.

Thats what its supposed to do.

It does not show the restore screen. iTunes sees it abyway though (if you time it right)

[yowiphone]

Does anyone know anyone that works in an AT&T store?

[McGeeTM]

Originally Posted by KiDDMaFF5646

u dont need ibrickr!! if u followed all the steps correctly, after apptap gives u that message "seding to iphone failed" hit ok and run apptap one more time u should be good to go.

well it seems that even when i run the program with the iphone not even connected, it STOPS right at the same point as if it was displaying the same error, this is not the correct error...i should atleast be getting all the files copied as well, not half way threw...


does it matter where apptapp is placed?

[DoerrFan]

Noticed something here, when i changed my IMEI back to normal from the "lockdown" IMEI, iTunes says I can't use my iPhone with it because the IMEI is incorrect.

[danimsta]

had mine upgraded to 1.1.1 with my mac

followed the instructions and it worked perfectly....

[yowiphone]

DOes anyone know if the TURBO sim method will unlock an iphone because the turbo sim tricks the iphone by pretending tis using AT&T sim.

[RANE2001]

well I tried everything even getting a new sim and same deal :-(

[moby2112]

I followed the instruction provided and it worked like a charm.

[yowiphone]

The TURBO SIM method.

[RANE2001]

whats the turbo sim method? I tried a search and got nothing please help

[sabroson]

I just want to say how glad I am that you guys are out there doing all this work.

If it wasn't for you guys I would not be able to have an iPhone here in Puerto Rico...

I get better customer support from this website than from Apple or AT&T itself ... it's strange.. but true !!!

THANK YOU !!!!!

[RANE2001]

I will paypal anyone $50 if they can get my iPhone working.... its bad enough that I lost all my contacts since my pc crashed but now I cant even use my phone. :-(

[damesio]

I tried over and over again 'til I left both buttons pressed for about 10 secs after the screen went blank, then released the sleep button (top) and iTunes recognized the phone, after that the option/alt-restore process selecting 1.0.2 ipsw file. At the end you will get an error but it should be error (1103). after that you are back in 1.0.2 Hope it helps

[RANE2001]

tried that and it updated to 1.02 but I still get incorrect sim error