Saturday, October 9, 2010

How to Update Your iPhone 4 Without Upgrading the Baseband (Windows)

This tutorial will show you how to upgrade your iPhone 4 to 4.1 without upgrading its baseband using TinyUmbrella. We recommend reading the TinyUmbrella Read Me Located here before doing anything.

Step One
Download TinyUmbrella from here Also make sure to download the iPhone 4 4.1 Firmware Located Here

Step Two
Right Click the TinyUmbrella exe (umbrella-4.1.6.exe) and Choose Run as administrator from the contextual popup menu.

If you get a Windows Security Alert, make sure both boxes are checked, and hit Allow Access

Step Three
Make sure the device is connected, and Umbrella has detected the type of device and its firmware.

Step Four
Hit Start TSS Server and make sure you receive no errors.

Once The TSS Server is "running" successfully, umbrella will kill iTunes. Leave TinyUmbrella Open.

If you do receive an error, DO NOT continue. Your restore will not work if the TSS server cannot be started.

Step Five

Open iTunes and Hit Shift+ Restore.

Browse to and select the iPhone 4.1 Firmware File.

Hit ok to Restore iPhone

Step Six
iTunes should give you error 1004.
This is what we wanted, as it notes the baseband has not updated :)

Step Seven
Go back to the TinyUmbrella window and Click Kick Device Out of Recovery

Your iPhone will now be on 4.1 with the 1.59.00 baseband!

**Thanks to semaphore for his work on this tool

If this tutorial needs to be updated please let us know here

*thanks iclarified*

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- Posted using my iPhone 4

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