make sure the itune on that computer is connected to internet..

Frozzbyte,
The only way to downgrade 3GS back to 3.1 IF.. AGAIN, IF you did backup your ECID certificate via to Cydia before... IF you did not do so... No way for you to did the restore at the moment.. And just SAY GOODBYE to jailbreak..

Here is the tools to downgrade if u meet the mention criteria above..

3Gs Downgrade Assistant: Free Utility To Downgrade iPhone 3Gs
3Gs Downgrade Assistant is free and for Windows ONLY. You can download it from
here


quote=frozzbyte,Sep 21 2009, 02:21 PM]
p/s - There's a way to downgrade from 3.1 back to 3.0.X but I already forgot where.

[/quote]

This post has been edited by sugen: Sep 21 2009, 02:53 PM

Yes.. you are right... Apple very smart now... purposely took away the 3.0 sign so that you have no way restore back to 3.0.. If you are able to restore to 3.0... You will lost your Ultrasnow unlock also.. As, the modem firmware/baseband is still in 3.1.. So do u think that this is a sign of end of JB world?

This post has been edited by sugen: Sep 21 2009, 03:42 PM

Pls backup your ECID certificate to Cydia, this is very important.. Don't upgrade to 3.1 ELSE u will NEVER able to JB again.... JB with 3.0 or 3.01 should be fine.. Pls refer to page 1 of this thread for JB to 3.01..

This post has been edited by sugen: Sep 21 2009, 03:57 PM

NO WAY for you to downgrade & u will never able to Jailbreak your iphone 3GS again... All you have to do is say goodbye to JB..

hmn... Not able to JB on 3GS is NOT because of the modem firmware has been updated & patched the vulnerability/hole required for the current JB method... You are wrong in this point..

It is because of 2 thing..

1.) The chips
The specific number they have chosen is the device's ECID, or "unique-chip-id", a number that all devices have so far had, although we haven't seen any previous use for it.

2.) The signature server
Of course, new hardware comes every year, and Apple decided to strike hard with the new iPhone 3G[S]. Rather than just throw in new local protections, Apple decided that every restore of the device would be verified as being valid and safe by Apple itself.

To do this, during the restore process, users see "Verifying restore with Apple...", during which time a challenge/response protocol is used between the iPhone and Apple: a "partial digest" of the firmware files being used is sent to a server, which can then decide to sign off on the result... or not.

Not only does this allow Apple to keep custom firmwares from getting loaded onto the device, but it also allows them to recall existing firmwares by keeping people from restoring to them in the future. To do this they simply would refuse to ever sign, for example, iPhoneOS 3.0 again.

However, to make this model secure, one must verify that their system is not subject to a simple "replay attack": where one just stores a copy of Apple's sign off and then returns it at a later point. This is a "beginner's attack", and one that is easily mitigated by any of a number of strategies.

This post has been edited by sugen: Sep 21 2009, 05:09 PM

Yes you are right.. It is not going to works if u DID NOT store your ECID n SHSH to Saurik Server Before....

Seem like Dev Team had give up with the WINDOWS users for now and for FUTURE..

---

Added on October 3, 2009, 6:29 pmTo summaries up.. All new iphone3GS out of the box is already ver 3.1 firmware.. Means to said.. Every new 3GS u got CAN NEVER BE JB... Apple had win in this battle... Sad to say that the CAT & MOUSE game had end...

This post has been edited by sugen: Oct 3 2009, 06:29 PM

if u just got your 3GS out of the box and it ships with 3.1 firmware.. Then, No way.. Your 3GS can't be JB... You can only restore IF and only IF u did a store the ECID SHSH’s to Saurik before.. If not.. just said good bye JB..

Yes.. this had already mentioned by Dev team.. They will follow up with the fix..

what a perfect timing !! Blackra1n is out for Windows.. And i will get my iphone3G (warranty claim back from Singtel) tomorrow.. Great that i can JB OS 3.12 on Windows...I have no concern about baseband update as i am using official unlock set..kekekek

http://www.blackra1n.com/

This post has been edited by sugen: Oct 11 2009, 09:42 PM

HowTo: Jailbreak Your iPhone/iPod Touch Using Blackra1n[SIZE=7]

The race is over and GeoHot crossed the finish line first. “Surprisingly” AppuloHa1l still asking for RT on twitter, and now they are trying to upload the files but they are blaming the “servers”. Anyway, Blackra1n is here, and its the fastest and easiest jailbreak you performed in your life.

Windows users , you should be so happy today, because blackra1n was released for Windows only at the moment. For Mac users this is not a problem at all, because we can run Windows in so many ways. Actually , this tool reminded me why i had VMware installed on my Mac.

Before we get started :

* blackra1n is only a jailbreaking tool and will not hacktivate your iPhone. This means that if you are not on an official Apple approved carrier BlackRa1n cannot activate it.
* if you have an iTouch, BlackRa1n only supports a tethered jailbreak. This means that once jailbroken you should not let your battery die. If it does die you will need to reconnect it to the computer and use BlackRa1n to boot it.
* With blackra1n you can jailbreak firmware 3.1 and 3.1.2
* If you are using firmware 3.0 or 3.0.1 you should update or restore via iTunes to 3.1 or 3.1.2
* If you are stuck at “running… ” … After you perform the upgrade/restore, restart the iPhone and run blackra1n. Everything should work. you can also try changing the USB port.
* if you are using Windows 7 , run blackra1n in compatibility “Windows Vista SP2″ and run it as administrator.

NOTE: after trying for an hour and a half i confirm that blackra1n does not play well with the iPhone 3G. The tool is still a RC1 so, you probably want to wait before the next release or further info from GeoHot

WARNING: Even though the GeoHot jailbreak supports 3.1.2 do not update if you are on iPhone OS 3.0.1 or 3.0. You will lose your unlock. Use PwnageTool to safely update to 3.1 without performing a baseband update. If you really must have 3.1.2 then wait for the next version of PwnageTool. If you have already updated to 3.1 or 3.1.2 without using PwnageTool then you’ve lost the ability to unlock for the time being. You can now use BlackRa1n to at least regain your jailbreak

Just to share.. Got back my iphone3G.. Upgraded to 3.1.2 & JB using Blackra1n... What i can say is that Blackra1n is the easiest JB tools i can say so far..

YES! Great Job.. I have paypall account.. I donate him and u donate me.. hahaha.. Just kidding..

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Added on October 12, 2009, 9:00 pmI did say 3G right? Yes. is 3G..
This post has been edited by sugen: Oct 12 2009, 09:00 PM

I believe Geohot is one of the main pillar in Dev team.. A lost to Dev team with his departure.. Good also la.. so we can have alternative..

For sure is 3.0... There is no way to JB 3.1 yet.. Most 3GS out of the box is 3.1

I am using Vista leh.. Just JB only..

BlackSn0w: Unlock For iPhone Firmware 3.1.2 Baseband 05.11.07

Fri, Oct 30, 2009

Some good news coming from GeoHot, for all the users that updated to firmware 3.1.2 and also updated their baseband. George is working on a iPhone unlock called BlackSn0w and it seems his getting closer to finding a solution.

If you take a look at the picture above, you can read the following:

hello there, this is geohot
this is the most complicated injection i have ever done, and it uses a public command
… prepare for blacksn0w, although i gotta still figure out this zamboni

Don’t expect Blacksn0w to be released in the next couple of days tho, because GeoHot said on twitter that it is still ways away. However, judging by how buggy is blackra1n, i really hope the iPhone DevTeam is close on finding a solution as well, and they will update ultrasn0w soon.

As soon as we have more info on Blacksn0w, or iPhone unlock we will keep you updated. Stay tuned…

This post has been edited by sugen: Oct 31 2009, 08:31 AM

Geohot has released the date (Nov. 4, 2009) for his new iPhone baseband unlock that we showed you here. Well now he’s asking for something in return. He’s asking for your help, to spread the word on the scammers out there, preying on the uninformed. He is asking for you to let everyone know, the Jailbreak software that he and the Dev-Team make (Blackra1n and PwnageTool) is free. That the unlocks are free.

First off, Jody Sanders, I am declining your $10,000. Why? Because you, and the rest of the iPhone unlock sites out there are scum. You make money selling freeware; that’s not cool, and I am in no way going to legitimize it.
Seriously, the people who really lose here are the customers. These sites are full of blatant lies, claiming to have unlocks for 05.11.07 People buy them, and are told the unlock is in development, and the release date is unknown. Imagine you bought a cup of coffee and were told it’s in development? Recently, many of these sites sent out e-mails saying they made major breakthroughs and the unlock will be ready 11/04/09. Coincidence that that’s the release date of blacksn0w?

They do this to help this community, so do your part, spread the word. Return the favor to the community. And send thanks to those that deserve it. Thanks Geohot and the Dev-Team, Chronic Dev, and iH8sn0w for the latenights and the hard work.

If you are owning a official unlock set.. NO problem on the JB & no need to worry about the baseband.. Because, at the end of JB.. Your iphone will UNLOCK officially via itunes..