[Possibly] Downgrade iPhone to 2.2 from 2.2.1!

The original post is here.

I will briefly introduce the steps and conditions:



1. Your 2.2 backup profile before


1. Download iphone 2.2 firmware – iPhone1,2_2.2_5G77_Restore.ipsw
2. Open iTunes, press “Shift” and hold still and click restore
3. Select iPhone1,2_2.2_5G77_Restore.ipsw and open
4. After you restore it, your screen shows error message “1013” or “1016”
5. At mean time, open QuickPwn, run through the whole process
6. After QuickPwn completes, your iPhone will restart with no signal and error time zone.
7. Connect your iPhone to your PC and open iTunes, restore your earlier backup then it should work.

The concept looks like Windows XP restore, but more complex. The author claims the solution works, but there is no gurranty.

Declaration: Itopia and I will not pay any responsibility of the data lost or any malfunction on your iPhone.


本文僅轉載自[這裡], 僅提供單純的簡化與翻譯.

聲明 : 本站Itopia及本人不負責任何執行上述步驟所造成的資料損失或者是iPhone的無法運作


1. 還沒升級2.2.1之前的2.2備份檔案


1. 下載 iphone 2.2 firmware – iPhone1,2_2.2_5G77_Restore.ipsw
2. 開啟 iTunes, 壓住shift不放並且同時點下Restore
3. 選擇 iPhone1,2_2.2_5G77_Restore.ipsw and open
4. 還原過程結束電腦螢幕會顯示 “1013” or “1016”錯誤代碼, 忽略
5. 開啟QuickPwn, 執行破解程序(可能需要DFU模式)
6. 完成QuickPwn過程後, 你的iPhone就是2.2的firmware但是沒有訊號以及時區錯誤
7. 連接iPhone開始iTunes, 將之前備份的2.2的檔案還原回去, 這樣應該可以回覆回2.2的環境.

概念上有點像是Windows XP的還原, 不過稍微複雜一點.
原作者有測試成功(他自己說的)但是不保證, 本文僅提供翻譯並且稍做簡化, 請詳閱原文與本文後再處理.


5 thoughts on “[Possibly] Downgrade iPhone to 2.2 from 2.2.1!

  1. Pingback: iPhone 專屬中文社群網站 iPhone4.TW - [消息] [不負責]iPhone 2.2.1 降級 2.2步驟說明

  2. Pingback: iPhone 專屬中文社群網站 iPhone4.TW - [求助] 2.2.1無法降回2.2?? - 第2頁

  3. 軟體按照步驟降為2.2了,但是數據機韌體還是02.30.03

    How to Downgrade 02.30.03 to 02.28.00 ????????????

  4. 目前的情況看來,

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