Guide-how to downgrade from 4.3.5 to 4.3.3 without blobs

[rich hathaway]

this thread is a guide on how to downgrade from 4.3.5 to 4.3.3 without shsh blobs
it is true that up to 5.0 os is untethered right now,but not released publicly yet.


so this is intended for those who cant/dont want to wait for the public release of the untethered jb for 4.3.5 and 5.0

click the thanks buttons at the end of this to see the post
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this goes without saying,I AND THIS FORUM ARE NOT RESPONSIBLE IF YOU SCREW YOUR PHONE UP!!!!!

ok let the downgrading begin.

tools u will need
redsn0w 0.9.8b5
ios 4.3.3 stock firmware
tinyumbrella 5-00-11 or-12
ifaith 1.3.2
fix recovery

Step 1: Go to this directory C:\Windows\System32\drivers\etc , and open host file and be sure that it ends by ( 74.208.105.171 gs.apple.com )

Step 2: Now start Redsn0w and Follow these steps,1- browse for the iOS 4.3.3 firmware file (NOT the 4.3.5)

2-Then Select “Install Cydia” Then hit Next

3-Another screen should now pop up. Before clicking “Next”, make sure your device is both turned off and plugged in, as instructed by Redsn0w.

4-You’ll now be instructed to enter DFU mode. As shown below, Quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.

Now your finish ,don’t do any thing ,Redsn0w does the rest of the work for you.(If you are in recovery mode , it’s OK don’t worry)

Step 3:Start TinyUmbrella 5-00-11 and Hit Start TSS Server

Step 4:Start iTunes, click on your iOS device icon from the sidebar in iTunes. Now press and hold Left “Shift” button on the keyboard and then click on “Restore” button in iTunes and then release this button and point iOS 4.3.3 firmware file.

Don’t worry it’s normal just Click OK and press and hold Left “Shift” button on the keyboard and then click on “Restore” button in iTunes and then release this button and point iOS 4.3.3 firmware file.

Note:In this step If you got iTunes error 1013 or 1015 follow this steps to fix it :

1-Start Fix Recovery and enter DFU mode. Hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.

Now Fix Recovery will start , just wait .

2-Now start iFaith and push the Dump SHSH Blobs button

3- Hit the Proceed button, followed by Let’s Go! until iFaith asks you to power off your device

4-Now iFaith will ask you to enter DFU mode. (Follow the instructions)

iFaith will take care of the rest.

5-Now iFaith will ask you to choose a location to save the file.

Step 5: Close TinyUmbrella and Start Sn0wbreeze-v2.7.3 and follow this steps:

1-Click the next “blue” colored arrow to proceed.

2-Select the required firmware(iOS 4.3.3) .ipsw file for your iOS device by clicking on the “Browse” button.

3-Sn0wbreeze will now identify the selected IPSW file. Once done, click the next “blue” colored arrow to proceed.

4- Now select the “Expert Mode”, followed by “Build IPSW” option to start creating your custom firmware.

5-Sn0wbreeze will greet you with the following “Done!” message when the custom firmware has been successfully created.

6-Now follow the onscreen steps to enter DFU mode using Sn0wbreeze after turning your device off.(Press and Hold “Home” Button and “Power” Button for 10 seconds Then release “Power” button but keep holding “Home” button until installation begins.

If you have followed the steps correctly sn0wbeeze will run iREB .

Step 6: Start iTunes, click on your iOS device icon from the sidebar in iTunes. Now press and hold Left “Shift” button on the keyboard and then click on “Restore” (Not “Update” or “Check for Update”) button in iTunes and then release this button.This will make iTunes prompt you to select the location for your custom firmware 4.3.3 file. Select the required custom .ipsw file that you created above, and click on “Open”.

now you should have 4.3.3 on your device.

the one variable here will be itunes error 2005 if you get this you will need delete all files accociated with itunes 10.5 and downgrade to an older version of itunes

if you do that and get and itunes error when you try to open it,that means you didnt get rid of all files,so search or use google to find the place itunes stores the file its giving the error for (it should give the invalid files name) then go there and get rid of it.
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hope this helps.

fyi from everything im hearing the untethered jb for 5.0 is comming fairly quickly as well as an unlock to follow afterwards for 5.0/5.0.1