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Downgrading 4.0 (beta) to 3.1.3 (Mac) |
Listed in: iOS Tags: apple, ios, rumors
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Disclaimer: As with all 'illegal' hacks on your iPhone, we accept no responsibility if this bricks your iPhone as we have no knowledge of what you've done before to your iPhone, so please don't come crying to us if it all goes wrong.
After installing iPhone OS 4.0, you will lose your jailbreak and unlock on your iPhone and iPod Touch, and given that it is as buggy as hell, you'll probably want to downgrade immediately. If you are looking for a solution to downgrade iPhone 4.0 firmware to 3.1.3 then follow the steps below.
Downgrading from 4.0 (beta) to 3.1.3 on a Mac (Windows Users)
You will need:
- iTunes 9.1
- Original firmware 3.1.3 (2G, 3G, 3GS)
- iRecovery v 1.3
- Libusb library
The Process to downgrade
- Copy the application “iRecovery” on to your desktop and install the library “libusb”.
- Open iTunes, click the ALT key + Restore and manually load the original 3.1.3 firmware.
- During the restore process, you’ll notice a pop up with error 1015, ignore this error.
- Click Ok to close the pop-ups and close iTunes.
- Now open the terminal and type the following commands:
- cd Desktop
- ./iRecovery -s
- setenv auto-boot true
- saveenv
- fsboot
- exit
- Wait a few seconds and disconnect the iPhone from the cable, then reboot the phone by clicking Home + Power buttons simultaneously.
- Connect the phone via USB and proceed normally, the Apple logo appears on the display and your phone should boot up in 3.1.3.
Your downgrade should now be complete and you will be back on 3.1.3 for iPhone.
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