iPad 3 same CPU better for JB?

citivolus

macrumors 6502a
Original poster
Sep 19, 2008
763
85
Assuming the report that the iPad 3 has essentially the same CPU as the iPad 2 is true, doesn't that increase the likelihood that a JB may be sooner than later?
 

eawmp1

macrumors 601
Feb 19, 2008
4,130
5
FL
As JB utilize software vulnerabilities in iOS, don't think processor will make much difference.
 

iDvisic

macrumors member
Feb 21, 2012
70
0
As JB utilize software vulnerabilities in iOS, don't think processor will make much difference.
Why then does it sometimes take longer for certain devices? I don't have loads of experience with JB, but I think I recall that they rolled out the iOS 5 JB for a4 based devices months before the cracked the 4S and iPad 2.

-->iDv.
 

eawmp1

macrumors 601
Feb 19, 2008
4,130
5
FL
Why then does it sometimes take longer for certain devices? I don't have loads of experience with JB, but I think I recall that they rolled out the iOS 5 JB for a4 based devices months before the cracked the 4S and iPad 2.

-->iDv.
Baseband?
 

d0vr

macrumors 6502a
Feb 24, 2011
603
1
It's just the difference between where they found the exploit that they can use to jailbreak. It can either be a software or hardware based exploit. For example, the limera1n exploit is a hardware based exploit that can be used for an device <=4. A software exploit however can be patched by Apple in future firmware releases (as they have done in 5.1). This means the jailbreak community would need to find a new exploit to use and can't use existing one as they can do with hardware exploits.
 

biohead

macrumors 6502
Jun 18, 2010
428
5
West Drayton, UK
If they find an exploit in the bootrom of the CPU, then that device can be permanently jailbroken - like A4 devices and lower currently can be. It's a tethered jailbreak until a software weakness is also found.

The A5 and A5X aren't necessarily going to have the same bootrom. I'd assume they are similar, but the differences may be enough to prevent an exploit being carried out on both.
 

citivolus

macrumors 6502a
Original poster
Sep 19, 2008
763
85
are the exploits used in the A5 JB publicly known such that Apple could have patched them in the A5X?
 

firstapple

macrumors 6502a
Sep 25, 2007
991
19
Won't know until the hackers get the new iPad in their hands... Ask this question in a few weeks.
 

JasonBare

macrumors member
Mar 11, 2012
33
0
Let's hope it's only a few days away:

...As veeence points out, i0n1c’s userland jailbreak for 5.1 on the A5 will very likely also work on the new iPad’s A5X processor, since the exploit is software-based and the two chips are not very different in terms of architecture. While the jailbreak will have to be extensively tested, i0n1c says that he expects to have 5.1 jailbroken on the new hardware once he gets his iPad in the mail over the next few days.


http://www.cultofmac.com/153653/ios-5-1-jailbroken-on-the-ipad-2-should-mean-early-jailbreak-for-new-ipad/