Like many other initial jailbreak releases, it that seems yesterday’s jailbreak release is causing some users to experience data connection, iMessage and iCloud connectivity issues. @iH8sn0w has today shared an easy fix for these problems on his official blog.
Simply follow these steps:
Install OpenSSH via Cydia (or optionally perform this as root in Mobile Terminal).
SSH in to your phone via Terminal (Mac/Linux) or PuTTY (Windows).
Type the following command: chmod 755 /var/mobile/ /var/mobile/Library/ /var/mobile/Library/Preferences/
Reset Network Settings (Go to Settings –> General –> Reset).
That should be it.
An update to the untether in Cydia (bumping it to 1.3-2) will be released soon to automate this fix. Also, an update for the Mac version of p0sixspwn will be available shortly to address the problem for new jailbreakers.