Comments on: Downgrade iPhone OS 4.0 Beta1 to iPhone OS 3.1.3 Firmware

By: Jose Javier Flores

Jose Javier Flores — Thu, 08 Sep 2011 07:58:00 +0000

It means to open up terminal in mac os x

By: Pemicabe

Pemicabe — Tue, 15 Mar 2011 17:18:00 +0000

it doenst work for iphone 3gs …FORGET IT

By: Ken Moore

Ken Moore — Fri, 12 Nov 2010 22:06:00 +0000

Wendy casper 2001 according to your reply on gadgetsdna.com you were able to remove the upgrade to 4.0 and revert back to 3.1.3 on your iphone. I am having compatability problems with my audio hardware as a result of this upgrade. I see the steps listed on the website, but I do not understand. Would you please help me and walk me through the steps? . I will gladly pay you for your time.

By: Krisybissy14

Krisybissy14 — Tue, 21 Sep 2010 22:19:00 +0000

when it says open the terminal and type what does that mean ? on the phone?

By: Hangrithy78

Hangrithy78 — Wed, 28 Jul 2010 01:08:17 +0000

how to activate iphone 3gs without sim

By: Hangrithy78

Hangrithy78 — Wed, 28 Jul 2010 01:08:00 +0000

how to activate iphone 3gs without sim

By: brandon

brandon — Tue, 27 Jul 2010 15:22:47 +0000

did not work for me. don't know how to use the terminal and don't know what you mean by open the terminal. please help! os4 is terrible

By: AlexK

AlexK — Tue, 13 Jul 2010 15:59:12 +0000

VERY IMPORTANT IF YOU HAVE VISTA or WINDOWS 7!

When you install LibUsb, you must first right click, go to properties, then change the compatibilty to Windows XP or else all of your USB ports, ethernet port, wireless, etc won't work.

If you forget, just uninstall it from the Programs & Features menu, then restart the computer to get back.

By: Wendycasper2001

Wendycasper2001 — Mon, 28 Jun 2010 23:44:02 +0000

Thank you so much….it works…..great post

By: Tianliang_90

Tianliang_90 — Fri, 25 Jun 2010 20:40:42 +0000

and how to i type in the open and type in the command? i open irecovery and it open and close