Phase 1 :: Downgrade iPhone 1.1.1 to firmware 1.0.2
1. Start iTunes and plug in your iPhone which is running the 1.1.1 firmware.
2. 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. OR Use iBrickr v0.91 to help you get into DFU mode and restore v1.0.2
3. iTunes will ask you if you want to restore. 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 folder where you've downloaded and saved v1.0.2.
4. When it completes, you will get an error. The iPhone will display the yellow triangle on the screen. Leave iTunes open, and run AppTappInstaller and select firmware v1.0.2. This may give you an error, but you should see the "Activate iPhone" screen after.
5. Close iTunes. Press CTRL + ALT + DELETE, find iTunesHelper.exe under processes and terminate it and run AppTapp again and select firmware v1.0.2
6. Go to the folder where you extracted PACAY and start “(CLICK HERE) activate.bat”. Follow the steps on your screen. When it asks to power the iPhone off and on again: Hold the power button on the phone, slide the red slider, wait about 15 seconds and power the phone on again.
Congratulations! You've successfully Downgraded + Activated w/YouTube.
Phase 2 :: Downgrading iPhone BaseBand from v4.xx to v3.14x
I presume your iPhone is still connected to iTunes, if NOT then please do so... and keep it connected at ALL times.
1. Extract the folder from the SaviourPack archive onto your drive.
2. On the iPhone goto Settings > General > AutoLock > choose 'Never'
3. Run iBrickr select Files, then goto /usr/bin/ and upload ALL the files ONE-by-ONE from the Saviour Pack folder.
4. Press the Back link and come to the main screen of iBrickr. Now select Applications and follow the instructions to install PXL.
5. Once your done, press Browse Applications and install MobileTerminal VT100 vsvnxxx and ONLY then BSD Subsystem v1.5
6. Run Mobile Terminal from your SpringBoard and type:
Code:
cd /usr/bin
TIP: Use the TAB key to auto complete commands/file/directory names
7. Stop CommCenter by typing:
Code:
launchctl unload -w /System/Library/LaunchDaemons/com.apple.CommCenter.plist
8. Give the bbupdater file read/write permission by typing:
Code:
chmod +x bbupdater
9. Now we check the version of the baseband, which should be v4.01 by typing:
Code:
bbupdater -v
10. Execute this in the console, to give iEraser executable rights:
Code:
chmod +x ieraser
11. Run iEraser by typing:
Code:
ieraser
Wait for a few seconds for the process to complete. This will WIPE your baseband, given a file "secpack" is in the same directory and this is a version 4 secpack.
12. Run the bbupdater command again. This time it will not find any baseband firmware:
Code:
bbupdater -v
Expect a slight delay in speed while your typing
13. Now we flash the 3.14.08 baseband firmware back to the iPhone by typing:
Code:
bbupdater -e ICE03.14.08_G.eep -f ICE03.14.08_G.fls
Press 'Enter' once and wait for 3mins 17 secs for it to complete. This will flash the 3.14.08 baseband firmware back to the iPhone. Please be patient and let the process complete. It's best that you DO NOT tamper with your phone.
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After running step 13, i have an error message from Iphone:
ProgressUpdated: 99
ProgressUpdated: 100
ProgressDetailUpdated: Sending end-pack.
ProgressOutlineUpdated: Process time was 2min 47 sec.
Error: Failed to download . FLS: Could not verify download image.
Done.
And everytime i try to run " bbupdater -v "
Resetting target
pinging the baseband
baseband unresponsive to pinging
Done
Please advice.
My iphone serial number is 7V738, accidently updated to 1.1.2 then messed up after that became
NO wifi, NO IMEI, NO sound,NO BT, NO firmware modem,( wasnt mine)
Brought me here by this poster:
http://www.modmyi.com/forums/showthr...=12229&p=73910
I dont have my iPhone back to live yet, but still appreciates to all experts day and night bringing some special helps to iPhone user's community
Tried to run it with SaviourPack1.1.2 shown the same error messages. The hammer would help !!!!
UPDATE UPDATE UPDATE
It is working now. Man oh Man oh Man. I took only file secpack fle from Saviour112 replaced secpack file on saviour, then run it from Saviour, is shown the bootloader right away.
Now the: WIFI, Network, Bluetooth, Sound, IMEI, ICCID, Modem Firmware 03.14.08_G are all back to lives. Wonderful
UNNNNNNNNBELLLLIIIEVABLEEEEEEEEEEEEEEEEE
Thank you so much