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iphone 3gs 4.2.1 jb question

S

shariain

macrumors newbie
Original poster
Jan 29, 2010
14
0
i have searched the forum for answers to this question and looked through the sticky on new to iphone.

is it possible to JB this iphone 3gs 4.2.1 modem firmware 05.15.04. if so what is the best way to do it for an un-tethered JB.

thanks
 
The only way at this point to jailbreak your iPhone 3GS 4.2.1 untethered is if you:

1. Have a Mac
2. Have SHSH blobs saved for 4.2b1 which you mostly don't.
3. Are a developer with a legitimate copy of the 4.2b1 ipsw which you most likely aren't.

But you can jailbreak tethered using the latest redsn0w.
 
thanks for the reply silly question how do i find out what bootrom i have
 
the last two numbers are 48 so what are my opions now for jb this iphone.
 
I already told you. Use the latest redsn0w and download iPhone 3GS 4.2.1 firmware from felixbruns. The instructions in redsn0w are self-explanatory.
 
Steven Jobson said:
The only way at this point to jailbreak your iPhone 3GS 4.2.1 untethered is if you:

1. Have a Mac
2. Have SHSH blobs saved for 4.2b1 which you mostly don't.
3. Are a developer with a legitimate copy of the 4.2b1 ipsw which you most likely aren't.

But you can jailbreak tethered using the latest redsn0w.
Click to expand...

Do you have to have BOTH #2 and #3 to do the untethered JB?
 
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