iH8sn0w, the well known iOS developer and researcher who is
responsible for the production of Sn0wbreeze, iFaith, iReb and f0recast
has been hard at work again trying to resolve an issue that has been
tainting the experience of owners of the iPhone 4S and iPad 2. The said
two Apple devices are powered by the A5 processor, and as any jailbreak
fan will know, it hasn’t previously been possible to perform firmware
downgrades on those two units. When Apple releases a new version of iOS,
they promptly stop signing the older firmware, meaning that any
official restores result in the user installing the latest official iOS
version onto their device.
In normal circumstances, going to the latest version of iOS isn’t
really a big issue for standard users. However, the problem occurs when
iDevice owners who wish to perform a jailbreak update their software,
leaving them having to sit and wait patiently until the Dev-Teams
produce a working, distributable jailbreak for that new iOS version. On
older devices, users can benefit from a firmware downgrade to versions
of iOS that Apple no longer signs as long as they have the relevant SHSH
blobs saved for that firmware. In most cases, Cydia automatically
captures any available blobs and update the users’ Cydia app with the
blobs that have been saved. Jailbreak fans also use the very popular and
powerful TinyUmbrella tool to quickly and efficiently capture available
SHSH blobs and save them locally on their machines for use at a later
date.
The news basically means that owners of the iPad 2, the new iPad and the
iPhone 4S have finally been invited to the downgrade party and will be
able to restore their devices to any firmware of their choice, providing
that they have the relevant SHSH blobs saved. Other than a tweet from
iH8sn0w about the APTicket system loophole, we have no additional
information from the developer, but as it filters through we will be
sure to bring it to you.
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