How to Update Your iPhone 4 Without Upgrading the Baseband (Windows) 4.3.1

POST

MAIL

Posted April 3, 2011 at 12:48pm by iClarified

This tutorial will show you how to upgrade your iPhone 4 to iOS 4.3.1 without upgrading its baseband using TinyUmbrella for Windows.

Currently there is an issue with older basebands such as 1.59.00 and FW 4.3.1. Until ultrasn0w is updated, you will only see one bar under signal strength.

Please Note: This ONLY Works with the iPhone 4!

Step One
Download TinyUmbrella from here Also make sure to download the iPhone 4 iOS 4.3.1 which you can find here.

How to Update Your iPhone 4 Without Upgrading the Baseband (Windows) 4.3.1

Step Two
Double click the downloaded TinyUmbrella.exe file.

If you get a Windows Firewall notification, check both boxes and click Allow Access.

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

**If you haven't already saved your iOS 4.3.1 SHSH blobs then click Save SHSH. Make sure they successfully save before continuing.

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. You can double check to see if the TSS server is running under the Log tab.

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 by doubling clicking its icon.

Hold down the Shift key and click Restore

Select your iPhone 4.3.1 firmware file from the popup window that appears and click Open.

Click Restore to begin restoring your device.

Step Six
iTunes should give you error 1013. This is what we wanted, as it notes the baseband has not updated :) Click Ok and close iTunes.

If you get a 16XX error then try entering DFU and go to step 5.
If your restore does NOT end in a 1013, it means your baseband was updated. This is likely because you did not have the TSS server running OR you updated without TinyUmbrella OR you are working with a device OTHER than iPhone 4.

Step Seven
Place your iPhone into DFU mode by holding down both the Power and Home buttons for ten seconds, then release the Power button and continue holding the Home button for another 5 seconds. You can find help with DFU mode here.

Step Eight
Fix Recovery in TinyUmbrella is currently not working. Download the standalone .exe file to fix recovery on 4.3.1. Extract the file and double click on fixrecovery43.exe. A command prompt will open, and the program will go through the process. During this time, you will notice scrolling text on your iPhone 4.

Step Nine
Your iPhone will now be on 4.3.1 with the 1.59.00 baseband! (Which means you can now unlock using this tutorial)

**Thanks to semaphore for his work on this tool

Follow iClarified

smile - November 13, 2012 at 3:15am

how with bb 02.10.04

Reply · Like

JC - October 14, 2011 at 6:20pm

Hi. I would like to know if this procedure works to upgrade an iphone 4 from IOS 4.3.5 to IOS 5??? Thanks... JC

433JB - July 8, 2011 at 2:32pm

Hi, I have upgraded to 4.3.3 using this tutorial, everything worked as given. However, after using FixRecovery43.exe, I am not able to get out of emergency screen. Can any one tell me how to get out of emergency screen? Thanks,

JF Gauthier - June 3, 2011 at 11:20am

Does this also apply to update to 4.3.3, I can see in tinyumbrella that my SHSH is saved for 4.3.3, my guess would be to say it is safe to do so. But I may be wrong.

youngplay - May 20, 2011 at 1:44am

I can confirm that this works also on 4.3.3

Khoi Ky Pham - May 22, 2011 at 11:49am

how did u get it to work with 4.3.1? Can you give us step by step what you did and where you get the files? Thanks

as_usual150 - May 9, 2011 at 1:29am

Is this method work for all future ios versions????

mikaljan - May 4, 2011 at 1:30pm

I can confirm that this works with ios 4.3.2 also, make sure you are running tiny umbrella in the back ground and have TSS server running!! The steps for upgrading to 4.3.2 without upgrading the baseband is the same as 4.3.1.

rolly - May 3, 2011 at 9:32am

Worked for me after trying loads of other sugestons...thanks!!

iPhoneDonate - April 28, 2011 at 2:15pm

http://www.iphonedonate.com The campaign to give money: who unlocked the iPhone 4 by software??

Trickdaddy - April 22, 2011 at 1:19pm

it seem like 4.3.2 is out but I like to keep my baseband so I am updating it to 4.3.1, the problem is that I am getting 16XX error which then I went back to step 5 but it like a loop getting the same 16xx error. I have TSS server running, and I try using Tinyumbrella 4.3 and 4.32 same problem. I also have try ignoring the error 16xx and ran the fix Recovery but I end up at the restore screen in Itune. I got this working before on another iphone. Anybody know what I am doing wrong?

RBrasil - May 24, 2011 at 5:37pm

I get the same loop. Let me know if you got an answer for this problem yet.

mrhernandez - June 2, 2011 at 8:11pm

im having this same issue, were you able to fix it ?

drgsrao - April 21, 2011 at 12:00am

I tried to update my Iphone 4 from 4.2.1 to 4.3.2 using the TU latest version.theTSserver is not running evenif you start with administrator.Please let me know How to do this.I am desparate as my phone is not resored completely and I do not have home page apple logo with Itunes is showing up Please let me know how to resore at this point to 432 without resoring BB thank you

dimpet - April 11, 2011 at 10:41pm

followed the instructions here, and successfully updated my iphone 4 to 4.3.1without the change to baseband 01.59.00. But how do I jailbreak next? I don't have Mac, but running redsnow will update the baseband again as far as I understand. Without JB, I can't run ultrasnow. HOW TO JAILBREAK?

blue2005 - April 11, 2011 at 3:23pm

I upgraded iPhone4 4.0.1 to 4.3.1 (preserving BB 1.59.00) using TinyUmbrella 4.30.05 + FixRecovery43. It worked without probelms....only now my phone i stuck in "Emergency Call" mode......HELP!!! What ca I do?

Dp - April 12, 2011 at 1:16am

Download snowbreeze and create a custom ISPw with Cydia and unlock screen

ywu1012 - April 10, 2011 at 8:44pm

I followed the instructions here, and successfully updated my iphone 4 to 4.3.1without the change to baseband 01.59.00. But how do I jailbreak next? I don't have Mac, but running redsnow will update the baseband again as far as I understand. Without JB, I can't run ultrasnow. Please help!

thyago231 - April 10, 2011 at 8:48pm

No! Redsn0w will not update ur baseband!!!! Go ahead and Jailbreak and install Ultrasn0w, it fixed the bars not showing right...

ywu1012 - April 10, 2011 at 9:46pm

Good! But do you have to run Tiny Umbrella again while Jailbreaking with Redsn0w? Thanks!

thebrij - April 9, 2011 at 1:22am

hey i hav actualy updated ma phone bymistake and it ll so me the baseband 3.10 and 4.2.1 os so is it possible to preserve it back to 1.59 pls help me fast ...>!!!

mo3tasem - April 7, 2011 at 4:51pm

i need way to unlock iphone after update without official sim

thyago231 - April 5, 2011 at 10:59am

It Worked updating from 4.1 to 4.3.1 but only one bar showing... but voice/data seem to be fine... does anyone know how to fix the bar issue?

hebs - April 5, 2011 at 4:10pm

Ive just found this.... trying now. it was Tiny Umbrella stopping the Apple 4.3.1 update getting signed and seemed to stop the Baseband being updated. To fix the problem go into TinyUmbrella and in the Advanced preferences, unchecked "set hosts to Cydia on exit" and then restored by iPhone. Restore didn't force me into recovery and now I have full bars.

ashdas - June 3, 2011 at 6:43pm

what was the BB after the update ?

beks6 - April 4, 2011 at 7:54am

the same problem, just one bar after update 2G/3G doesnt matter. but calling is working

Help - April 4, 2011 at 3:03am

I also have 1 bars after this tutorial... Please Help

Saumil Bhavsar - April 27, 2011 at 5:48am

Use Ultrasn0w fixer from Cydia

Fancyvpp - April 3, 2011 at 10:29pm

i updated using restore option but i am not getting any signal bars. i did a google search and other people are having same problems. i restored back to 4.2.1.

More Comments