How to Downgrade Firmware 4.0 beta to Firmware 3.1.3 / 3.1.2

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Firmware four.zero Beta 1 has simply come out, however regardless of the warnings, a few of you needed to set up this new model.&#a hundred and sixty;

We recommend one way on this tutorial that you may simply revert to model three.1.three or three.1.2.&#a hundred and sixty;

Warning: This tutorial handiest works for the &#a hundred and sixty;iPhone 3GS .

.&#a hundred and sixty;

Obtain and Necessities:&#one hundred sixty;

Firmware three.1.three or three.1.2 iPhone 3GS

IPhone 3GS

Having saved the ECID on servers Saurik&#one hundred sixty;

.&#a hundred and sixty;

Set up:&#one hundred sixty;

1. This primary step is to "hijack" the connection to iTunes, to level it to any other server completely different from that of Apple. We can use the hosts file to do that:&#a hundred and sixty;

On Home windows:&#one hundred sixty;

In finding the host file in C: Home windows System32 drivers and so forth hosts&#one hundred sixty;

Double click on on Make host.Si you’re requested which application to make use of to open the file, make a choice Notepad.&#a hundred and sixty;

Within the file open, add the remaining line: seventy four.208.one hundred and five.171 gs.apple.com&#a hundred and sixty;

&#one hundred sixty;&#one hundred sixty;

&#a hundred and sixty;

Store the file&#one hundred sixty;

On Mac OS:&#a hundred and sixty;

In finding the host file in / and so forth / hosts /&#a hundred and sixty;

If requested what software to make use of to open the file, select Textual content Edit, after which observe the identical steps as for Home windows&#a hundred and sixty;

If you could now not ouvir file you wish to undergo teminal to edit (Terminal is situated within the Functions> Utilities> Terminal): press enter on the finish of each and every line&#one hundred sixty;

Sort sudo-s&#a hundred and sixty;

your password that you just put for your mac&#one hundred sixty;

vi / and many others / hosts&#one hundred sixty;

kind i to enter insert mode&#one hundred sixty;

Then reproduction the deal with seventy four.208.a hundred and five.171 gs.apple.com&#a hundred and sixty;

kind: wq&#a hundred and sixty;

and eventually kind exit&#one hundred sixty;

2. At this level, we will enter the real technique of downgrade:&#a hundred and sixty;

It’s important to put the iPhone in DFU mode:&#one hundred sixty;

Join your iPhone to the pc and concurrently press the HOME button and the POWER for precisely 10 seconds, then unencumber the facility button and simply proceed to appuiller the HOME button except iTunes acknowledges a brand new tool into restoration.&#a hundred and sixty;

three. Now that the bottom is ready launch iTunes and click on "Repair" by means of retaining the "Shift" key (Home windows) or "Alt" (Mac OS). Make a choice the file to replace your tool firmware three.1.three and the restoration will begin.&#a hundred and sixty;

The iPhone must have a completely black display when you have one thing else once more to make dealing with the iPhone in DFU mode. Many individuals confuse it with the restoration presentations an iTunes emblem + cable USB This isn’t the great we’d like an absolutely black display with nothing displayed on it!&#a hundred and sixty;

After a couple of minutes you’ll have a small error 1015 (or 1011 or 1013) don’t worry it's customary! press adequate!&#one hundred sixty;

if the error 1015 prevents you from downgrade, re managing (step three) at the least thirty instances. This will likely end in resetting NAND reminiscence, so that you may downgrade.&#one hundred sixty;

If Error 3002&#a hundred and sixty;

You don’t store the ECID on the server of Saurik by the use of Cydia when it used to be that you can think of!&#a hundred and sixty;

four. Then the one factor ultimate is to jailbreak as before by following our complete jailbreaking and unlocking guide for iPhone 3.1.2 firmware using blackra1nPwnageToolredsn0wsn0wbreezeultrasn0w and blacksn0w.

 

Download iPhone Firmwares.

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