Upgraded the #failbreak with a kernel exploit so tweaks actually work on iPhone 5. :D Almost a full tethered JB, though need dev account.
Last month, chpwn revealed that his jailbreak for the iPhone 5 would be reserved as a failbreak. That means it will be limited to jailbreak developers and won't be released to the public.
Planetbeing explains why a failbreak is necessary:
These exploits are valuable for discovering new ones in the future, so it's nice to keep them and release only the good ones.
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