How to upgrade a jailbroken iPhone from 1.x to 2.0 (Windows)

There are a lot of people out there with jailbroken iPhones running OS 1.x. I would love to know how many eBay alone has sold over the last year. The estimates are huge, and are likely the reason the new iPhone 3G must be activated at the store (and cannot be purchased on the internet).

There are some tricks you will need to know to get your iPhone from 1.x to 2.0. These instructions were developed and tested on Windows XP SP2. (Don’t worry — I’ll post the Mac version soon.)

WARNING:
Only do this procedure if you have AT&T cell service!
The software for unlocking iPhone 2.0 is NOT AVAILABLE — yet.
Until it is, all people with cell service other than AT&T
must wait to upgrade to 2.0!
DISCLAIMER:
By following these instructions, you accept all responsibility for what happens to your iPhone, and you agree to hold MobileWebExpert and its founder blameless and exempt from liability or penalty.
In other words, you break it, it is your fault alone.

First, some quick definition of terms:

  • ‘jailbroken’ means the iPhone is opened up to install software from sources other than Apple
  • ‘unlocked’ means the iPhone is able to use any cell phone carrier that uses a SIM card
  • ‘activated’ means the phone is able to make cellular calls
  • ‘DFU mode’ is the iPhone screen showing the cable with an arrow pointing to the iTunes icon (see below)

These are the things you will need:

This is the summary of the update procedure.

  1. Gather and install all software listed above.
  2. Connect the iPhone to your Windows PC.
  3. Open iTunes 7.7 and sync your iPhone. Be sure to use iTunes 7.7! See why here.
  4. Now backup your iPhone by right-clicking on the iPhone in the left sidebar and clicking backup. See screen capture here.
  5. Open ZiPhoneGUI.exe and change the iPhone to DFU mode. It’s under the Advanced Features. Click the button that says DFU Mode. Big scary warning is OK.
  6. In iTunes, select the iPhone in the left sidebar, and shift-click the restore button on the Summary tab.
  7. Find iPhone1,1_1.1.4_4A102_Restore.ipsw and click Open. A jailbroken iPhone must be restored back to 1.1.4 before going to 2.0 — THIS IS IMPORTANT! iTunes will give you an error if you try, but won’t hurt anything as far as I know.
  8. When that finishes, iTunes wants to restore your backup. DO THIS!
  9. In iTunes, select the iPhone in the left sidebar, and shift-click the restore button. YES AGAIN.
  10. Find iPhone1,2_2.0_5A347_Restore.ipsw iPhone1,1_2.0.1_5B108_Restore.ipsw and click Open. NOTE: This step took a reaaaaaaaaly long time to finish.
  11. When that finishes, iTunes wants to restore your backup. DO THIS AGAIN!

UPDATE: Newer versions of the iPhone software are available.

This is why the links above are crossed out.

Please visit this post to download any version of the iPhone software:
http://mobilewebexpert.com/iphone-software-releases-100-through-210

July 11, 2008 · Filed Under iPhone

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