It looks like you're new here. If you want to get involved, click one of these buttons!
Last weekend, BigBoss had released a new package on Cydia called SemiTether, which allowed users to reboot their tethered jailbroken iOS 5 device without the need to connect it to the computer.
However, BigBoss's solution had some limitations and number of users reported issues after using it. BigBoss has released a new version of SemiTether (v0.91), which incorporates the new mobile substrate by Jay Freeman a.k.a saurik that should make the semi tethered mode more stable.