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 Downgrade Your iPhone 3GS Using Sauriks Server
Unread 09-14-2009, 07:49 PM   #1
sosly
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Downgrade Your iPhone 3GS Using Sauriks Server



Jay Freeman (saurik) has been a busy man for a while now. His latest project to come our way was just released less than an hour ago - a way to finally downgrade your iPhone 3G[S] from 3.1 (with a few "well, if"s in there) to something currently jailbreakable (like 3.0.1).

Saurik's got some crap to toss on Apple's wall, too, with this one. The article features not only an informative look into the methods of jailbreaking, and a history of Apple's push for individuality (and of course the instructions on how to downgrade your iPhone 3G[S}) - it goes so far as to offer up some tasty tidbits like "Congratualations, you just overthrew your orwellian overlord, and have taken back control of your device," and "Apple, as a company, has turned into a corporate hypocracy, embodying the very ideals that it claims to be rebelling against."

It's a great read with some solid points - if you're at all interested in this stuff, you should read the whole thing.

The gist of the situation is this - people can't downgrade their 3G[S]s from 3.1 (until now with this new method) because Apple has implemented a new security method. When you restore an iPhone 3G[S] in iTunes from 3.1, iTunes will show
Saurik's solution was to build his own activation server which is checked instead of Apple's - verifying the [perfectly fine] firmware where iTunes wouldn't.

A big, gaping stopping point, at the moment, is if you didn't press the "yes i like jailbreaking" or wtvr that link said in Cydia for the few days it was there (over 50,000 3G[S] users did), you don't have an ECID SHSH "on file" with Cydia's servers - meaning you can't downgrade. This will only work if you pressed that link in Cydia while it was there (before 3.1 came out). Read saurik's article for full reasoning behind it.

An exploit is [supposedly] available for 3.1 though, so you will be able to jailbreak 3.1 anyway soon. However, this doesn't mean you don't need your ECID SHSH "on file" with Cydia - you still should (when the jailbreak comes up for 3.1 you'll be able to get it on file again). Because as of 3.1, you can NEVER downgrade without this method (yet) unless Apple specifically signs the firmware. Meaning - they decide what firmware you can use and can't use.

The instructions in saurik's guide, while straight-forward, are a bit more complicated than "plug in, press the Easy button" - so be warned, it's a fun throwback to the earlier days of iPhone modding, when you had to actually DO something.

Read the full guide and article here
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Unread 09-14-2009, 08:03 PM   #2
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Ok well when I did my cydia ecid shsh I think I was using 3.0.1 ?!? So if I try this ,,,should I use 3.0.1 ispw or 3.0 ?!? Please help .......I need to downgrade from 3.1 asap
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Unread 09-14-2009, 08:03 PM   #3
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Wow, this guy needs a big thank you lol What a guy!
iPhone 3G 3.1.2 pwnage
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Unread 09-14-2009, 08:23 PM   #4
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i dont get where to go for mac os x?
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Unread 09-14-2009, 09:21 PM   #5
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In order to edit it in the terminal I typed the following:
sudo nano /etc/hosts

This brings up the text editor in the terminal and lets you edit what you need.

Be careful and if you don't know what your doing, wait or clearer instructions

Or

Open finder and tap on and on the top left click on go and scroll down to go to folder and choose that.. Then type in /etc and you will be in the etc folder so just find the hosts file and open with text editor then copy paste what saurik posted and save the file reboot computer and try to downgrade

Last edited by sosly; 09-14-2009 at 09:51 PM.
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Unread 09-14-2009, 09:49 PM   #6
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Man I'm glad I don't have to deal with this shit lol. Fuckin gay ass Crapple



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Unread 09-14-2009, 10:52 PM   #7
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Hey I'm wondering ,,,if I was on 3.0.1 on my 3gs and had my ecid shsh on cydia and when I downgrade from 3.1 ,,,what ipsw file do I use .......3.0.1 or 3.0 ?!? Please help
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Unread 09-14-2009, 11:08 PM   #8
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Quote:
Originally Posted by zguy916 View Post
Hey I'm wondering ,,,if I was on 3.0.1 on my 3gs and had my ecid shsh on cydia and when I downgrade from 3.1 ,,,what ipsw file do I use .......3.0.1 or 3.0 ?!? Please help
3.0 because suarik is not signing 3.0.1 as he stated in his site
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Unread 09-15-2009, 12:53 AM   #9
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This video may help some

http://www.youtube.com/watch?v=http://www.youtube.com/watch?v=t0prIxWIPq0&feature=channel_page
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Unread 09-15-2009, 01:12 AM   #10
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how about one for windows !?! what do I open up C:\Windows\System32\drivers\etc\hosts with ?! Please help .......I wanna give this a try tonight
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Unread 09-15-2009, 01:25 AM   #11
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notepad
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Unread 09-15-2009, 01:30 AM   #12
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Just use notepad.

Here is a HOSTS file that I created that will work with XP and Vista. Just download it and put it in your C:\Windows\System32\drivers\etc\ folder.

hosts



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Unread 09-15-2009, 02:03 AM   #13
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Hey Sinful........So after I download this file of yours what do I do after !? Just follow the Saurik steps ?!
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Unread 09-15-2009, 02:09 AM   #14
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Yes after you use his host file do the rest of the steps
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Unread 09-15-2009, 02:15 AM   #15
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Unread 09-15-2009, 03:02 AM   #16
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Icon9

cool thanks guys gonna give it a shot !!!

---------- EDIT ----------

Hey Sinful,,,, I did everything after I your file to the host folder..........everything was going smooth and it looked like it was gonna restore but I got this " The iphone ''iphone'' could not be restored. An unknown error occuued (1015) and its stuck on the itunes plug screen Can someone tell me what I didnt do or did wrong ?!?! PC

---------- EDIT ----------

Stuck in Restore

Unfortuntaely, this second restore is also going to fail (*sigh*), and irritatingly enough it is going to cause the exact same error message: "The iPhone "iPhone" could not be restored. An unknown error occured (1015).". This is still expected behavior.

For those who are again curious, what has happened is that when the device turns on it has to decide what it is going to do: wait for instructions over USB, or continue into the boot process. This is determined by an NVRAM variable named auto-boot, which is currently set to "false".

Normally this is set at the end of the restore process, but technically we were unable to finish the restore: it is my understanding that this is because upgrading to 3.1 installed the 3.1 baseband (which is currently not unlockable, btw), and the baseband upgrade in the 3.0 release then fails, stopping the restore.

However, that seems to be the last and least important part of the restore, so we technically won: we are never, though, going to be able to restore back to 3.0 without hitting this 1015 again, though.



Can someone explain this to me in dummy terms
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Unread 09-15-2009, 03:09 AM   #17
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Are you sure that your signature files are on Sauriks server?



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Unread 09-15-2009, 03:28 AM   #18
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Yeah my 3gs on the cydia said I had my ecid shsh on file !?! A couple of weeks later my phone froze and thats when I had to restore/update to 3.1 ...............When I clicked on sauriks ecid thing , I was on 3.0.1 ,,,,,I wonder if that matters ?!?! Gonna try it with 3.0.1 fw and if that doesnt work gotta restore back to 3.1 LOL FUCK!!!!
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Unread 09-15-2009, 08:23 AM   #19
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Zguy, did you manage to jailbreak? Try this:

Downgrade iPhone 3GS from iPhone Firmware 3.1 to 3.0 | Redmond Pie

....:
Select the firmware 3.0 .ipsw file you downloaded in Step 2 and restore it. During the restore process, iTunes will throw you 1015 error which will say:

The iPhone “your iPhone” could not be restored. An unknown error occurred. (1015)

Just ignore this error and restart the restoring process from Step 5 to Step 6 until you get the 1015 error again. At this point, simply ignore the error and close iTunes as your device has already been successfully downgraded to firmware 3.0.

Step 7: You can now jailbreak your iPhone which you have downgraded from firmware 3.1 to 3.0..

Last edited by themongrel; 09-15-2009 at 08:29 AM.
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Unread 09-15-2009, 10:59 AM   #20
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Quote:
Originally Posted by zguy916 View Post
how about one for windows !?! what do I open up C:\Windows\System32\drivers\etc\hosts with ?! Please help .......I wanna give this a try tonight
Notepad
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