How to downgrade a generation of iPhone from 2.0.2 to 1.1.4

Some time ago, I tried to upgrade the iPhone to the 2.0.2 firmware and found that it was not very convenient to use. I wanted to downgrade it back to 1.1.4. The following is my practice process: (refer to weiphone Forum)

1. uninstall itunes7.7 and install 7.5 after restart (an error is reported when running properly. You only need to delete the error file in iTunes under my music in my documents, it is said to be a music database)

2. Download The 1.1.4 firmware from the apple website.

3. Enter the DFU recovery mode: The method isIPhone startup statusNext, connect the iPhone to your computer, open iTunes, press the Home key, and then press the power key until the black screen releases power, but you still have to press the home, wait about 15 seconds until iTunes prompts you to find an iPhone in recovery mode. At this time, the iPhone screen prompts you to connect to iTunes. Note: If the iPhone uses a USB header to connect to iTunes, it turns out that the recovery mode is incorrect instead of the DFU mode. The real DFU mode is black.

4. Click the restore button of iTunes, and then press shift and click OK. At this time, you will be asked to select the downloaded 1.1.4 firmware, select the firmware, and restore it.

5. After the restoration is complete, an error message is displayed. Do not turn off the error message. Download an ibus2.0 file from tgbus and click [Exit recovery mode]. At this time, your iPhone screen turns green.

6. Go to iTunes and click "OK" for the error message. Then, you will be prompted to reinstall it again and reload it again in step 4.

7. After the installation is complete, an error will be prompted. Enable ibus and click [out of recovery mode]. At this time, the iPhone screen should become red. Regardless of it, the red will disappear soon :)

8. Download weplus2.1 and crack it. (click one-click cracking. Don't worry about the iPhone. It will take a while)

A download link for the cracking tool is provided:

Http://www.weiphone.com/thread-92231-1-1.html

Note: Do not power off the iPhone during the cracking process (in fact, it is generally not power off, unless the swap battery ...)

9. The attack is complete! Use pcsuite or ibus to download the software you need.

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