How to Fix Mobile Substrate for IOS 4.3 Jailbroken

Step 1: Start Cydia and install Safari Download Manager and iFile for your version of iOS device.

Step 2: Now navigate to this link via Safari browser on your iPhone, iPad or iPod touch.

Step 3: Download the .deb file to: /var/mobile directory.

Step 4: Now start iFile and navigate to /var/mobile directory. Tap on the Mobile Substrate .deb file that you downloaded, and then tap on “Installer” button to install it.

Step 5: Once done, reboot your device in jailbroken state. Start Cydia, search for Mobile Substrate and you should now have the latest version which supports iOS 4.3.

Note: Even with this updated version of Mobile Substrate, Ultrasn0w wont work. Therefore there is NO unlock for iOS 4.3 yet. If your iPhone relies on a unlock, DO NOT update to stock iOS 4.3.

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