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How to jailbreak iPhone 3GS with MCxxxxx serial No?

E

erichkooi

macrumors member
Original poster
Hi Guru,
Is there anyone jailbreak on their iPhone 3GS with MCxxxxx serial no successfully?

If yes, do u have any info on guide?


Thanks in advance,
Eric
ps: I did search around and not much articles on jailbreak for above model.
 
erichkooi said:
Hi Guru,
Is there anyone jailbreak on their iPhone 3GS with MCxxxxx serial no successfully?

If yes, do u have any info on guide?


Thanks in advance,
Eric
ps: I did search around and not much articles on jailbreak for above model.
Click to expand...

MC is a model number, not a serial number.

What matters is 2G, 3G or 3GS and firmware and baseband and bootrom (new or old).
 
dhlizard said:
MC is a model number, not a serial number.

What matters is 2G, 3G or 3GS and firmware and baseband and bootrom (new or old).
Click to expand...


Hi dhlizard,
Thanks for info.

Firmware version is 3.1.3 (7E18) n how can I check on baseband n bootrom?
 
erichkooi said:
Hi dhlizard,
Thanks for info.

Firmware version is 3.1.3 (7E18) n how can I check on baseband n bootrom?
Click to expand...

If you have a 3GS on 3.1.3, the only way you can jailbreak is to downgrade your phone to 3.1.2, since Apple eliminated the USB exploit that used to make jailbreaking possible on the 3GS. Unfortunately, since Apple has stopped signing the 3.1.2 firmware, you can only downgrade if you have saved your 3.1.2 SHSH either on Saurik's server through Cydia or locally using Umbrella. If you don't, then there is no way to jailbreak your phone.
 
thelatinist said:
If you have a 3GS on 3.1.3, the only way you can jailbreak is to downgrade your phone to 3.1.2, since Apple eliminated the USB exploit that used to make jailbreaking possible on the 3GS. Unfortunately, since Apple has stopped signing the 3.1.2 firmware, you can only downgrade if you have saved your 3.1.2 SHSH either on Saurik's server through Cydia or locally using Umbrella. If you don't, then there is no way to jailbreak your phone.
Click to expand...

Hi thelatinist,
Thanks for the info.

That mean step 1:
I have to downgrade from 3.1.3 to 3.1.2 because 3.1.3 is not yet able to be jailbreak for 3GS set.

Guide: http://www.ihackintosh.com/2010/02/downgrade-iphone-3gs-os-3-1-3-to-3-1-2-with-cydia-shsh/

step 2: Download any blackra1n, redsnow or snowbreeze jailbreak n update it.

That is all i need to do, right?

PS: In case anything goes not as planned, i can update back to original 3.1.3 by restoring from iTunes.
 
erichkooi said:
That is all i need to do, right?

PS: In case anything goes not as planned, i can update back to original 3.1.3 by restoring from iTunes.
Click to expand...

Yes to both questions. But this will only work provided that you were previously jailbroken and chose the "Make My Life Easier" option in Cydia.
 
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