IPhone 3gs Jailbreak Possible or not?

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protool

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i have 16gb 3gs model MC131KS(is that new bootrom?) , 4.0 os , JAILBREAK possible ?
 
yes bro its 10000% possible but first you have to downgrade your phone how?
Step 1: Download & install libusb-win32-filter-bin-0.1.12.1.zip

Step 2:
Navigate to C:\Windows\System32\drivers\etc\ and locate
 
1) Old/new boot: this is just to find out if it's tethered or not. To find out old/new bootrom you need to put your phone manually to DFU mode (not restore mode) and read some values in the USB strings.
Detailed instructions:
which-bootrom-do-i-have-3gs | jailbreakmatrix.com

2) To jailbreak iOS4 you need to downgrade to 3.1.2 first.

3) To downgrade 3GS firmware, you need the Apple certificate for your iPhone for the firmware you want to downgrade to (shsh file). Apple created certificates for 3.1.2 until Feb 2, 2010. If you didn't back it up until then, you cannot downgrade. If you were jailbroken before that date, Cydia did automatically back up the shsh file. To downgrade using shsh, the post above is correct.
I hope you backup your 4.0.1 shsh now to downgrade in the future to that version, if you forgot it earlier.
See timeline for shsh:
SHSH - The iPhone Wiki
(the rest there is technical)
 
no man this solution work 100% with 3g not 3gs with prog du modem 05.13.04 os4 ... so waiting new solution from dev team to release jailbreak and unlock 3gs new bootrom
 
Unlock iPhone, Jailbreaking is very common process which does not imply expertise. iPhone users are terrified by the number of steps required to use software to unlock the iPhone. different iPhones have different baseband and bootroom, There are different steps to be followed even fro the the same software which is used to jailbreak/unlock iPhone 4 iOS 4.

source: Unlock iPhone 4 OS
 
bro
if you have teseted with 3gs os4 and prog du modem 05.13.04 explain witch steps you have do to jailbreak and unlock it ?

NB : os4 not supported to jailbreoken with spirit
 
why the f-u-c-k you put this link here ,this site is fake ....

read this.

http://forum.gsmhosting.com/vbb/f456/solution-how-downgrade-iphone-4-0-1-4-0-0-3-x-x-then-you-can-unlock-1053063/#post6110919

http://forum.gsmhosting.com/vbb/f456/fake-site-www-unlockiphone4-org-1053400/#post6111556
 
bro this solution work perfect for iphone 3g and 3gs i have tested yesterday with iphone universal sim car and using spirit to install cyndia
 
I do have a new 3gs 4.0 OS (never jailbreaken), do you think, I can downgrade it?
I do not understand Step 5: Now restore your device by iTune 9.2 (by DFU mode),
how can I do that?
 
for this solution i think that the shsh of the OS 3.1.3 was saved on cydia before and that's why it works
but if you didnt save this shsh before upgrading to 4.0 , you can not downgrade to 3.1.3 agin
plz correct me if I am wrong ?
i tried to dongrade with this solution but it didnt work so i cheked my shsh in cydia and the message was "cydia does not have the shsh for ..... 3.1.3"
plz i need an answer .
 
When you install Lib_USB, then we do not recognize the IPHONE! I have 64bit and Windows 7 iphone 32GB FW 4.0.1 3GS 5:13:04! SIGNS DO NOT WORK
 
i really saved my shsh for Os 4.0 then I upgraded to 4.01 then i savedmy shsh for 4.01 then i tried to dongrad to 4.0 and it works
but when i wanted to downgrad to 3.1.3 it didnt work !! and i dont have the shsh saved for 3.1.3 it may be the cause .
 
How to: Jailbreak/Unlock iPhone 3.0 – Windows PC redsn0w Edition
Unlock software, repair and flash tools, service manuals, unlock codes ...
 
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