All those folks who are eager to update to iOS 4.1 and try the new features that come with it.This step-by- step tutorial will show you how to update your iPhone to iOS 4.1 while preserving the baseband.

Note: Don’t proceed if you haven't saved your SHSH blobs.

REQUIREMENTS :


iPhone 4
Tiny Umbrella  (v 4.1.3)







[How To] Update To iOS 4.1 Without Updating Baseband :

1) Download the latest Tiny Umbrella (v 4.1.3).
2) Run Tiny Umbrella.
3) Start TSS Server.


4) Open iTunes.
5) Restore to iOS 4.1 (Don't Update).Download it here.
6) Just ignore iTunes 1004 error- baseband update failed.
7) Click "Kick Device Out of Recovery".



Now you are on iOS 4.1 with 1.59.00 Baseband. As always, do let us know how it goes.