Upgrading a jailbroken iPhone from 2.0 to 2.0.1.

by WyldKard on August 10, 2008

It was only a couple weeks ago that we detailed our process for upgrading a 2G to firmware 2.0. This process, thanks to PwnageTool, allowed us to make use of the latest features (like signed third-party applications) on our jailbroken/unlocked . Since then, Apple released the 2.0.1 firmware update, which fixes some of the sluggishness that 2.0 users have noticed. Fortunately, shortly after the release, PwnageTool was updated to allow those of us running jailbroken/unlocked iPhones to upgrade to the similarly snappy firmware, and naturally, still keep our iPhones unlocked and ready to run unsigned third-party applications.

The process for this upgrade isn’t as complicated as the last one, and our respective write-up remains the best guide to follow if one is still running a pre-2.0 firmware revision. If one is already running 2.0, however, and previously followed our guide, then only a couple steps are necessary for the 2.0.1 upgrade.

  1. Run iTunes, and connect your to the computer. Download the 2.0.1 firmware for the , but don’t install it.
  2. Put your in DFU mode. Instructions for doing this, if you don’t recall how, can be found in step three of the 2.0 upgrade article.
  3. Run PwnageTool and let it check for updates. The latest version is 2.0.2, so make sure that’s the final version you’re running.
  4. When we went through this process, PwnageTool only found the 2.0 IPSW file, which we didn’t want. This required us to run PwnageTool in “expert” mode, and manually select the firmware we downloaded in iTunes in step one. By default, you’ll find updates in ~Library/iTunes/ Software Updates/ in your system’s user folder. You don’t need to make any other changes in expert mode, so just go ahead and build the new IPSW file. Once it’s done, shut down PwnageTool.
  5. In iTunes, hold down the alt/option key, and click on the restore button. Select the IPSW file that PwnageTool just generated. Once the has been upgraded, it will run through an automated process, and once that’s done, go ahead and re-sync from your last backup.

This version of PwnageTool not only re-installs Cydia, but brings back Installer.app in beta form. At the moment, Installer.app has very little functionality, however, so don’t expect to see the number of applications/hacks in it that could be found in it when running a pre-2.0 firmware revision. Overall, the upgrade process is quicker and easier than the upgrade to 2.0 was, if only because we didn’t need to put our in DFU mode more than once, download the bootloaders, et al. Note that after upgrading, we did have to restore from our backup twice before iTunes finally allowed us to sync as usual. It was a minor hiccup in the process, but nothing serious.

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