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.
Download TinyUmbrella from here Also make sure to download the iPhone 4 4.1 Firmware Located Here
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
Make sure the device is connected, and Umbrella has detected the type of device and its firmware.
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.
Open iTunes and Hit Shift+ Restore.
Browse to and select the iPhone 4.1 Firmware File.
Hit ok to Restore iPhone
iTunes should give you error 1004.
This is what we wanted, as it notes the baseband has not updated :)
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
Our new Forum is now open here or on the top tabs marks Forums, please register and post..
For the latest tech stories, follow us on Twitter at
@iphonepixelpost or @limerain_com
- Posted using my iPhone 4