Jul 5 2009
Push Notifications was a major feature of the 3.0 Firmware. However Push was not working at all for those whose device was Hacktivated (unofficially activated through jailbreak). Along with Push, Youtube too was not working.
The Devteam has just launched a small fix for both of these problems. Note that this Fix is still in a premature level and hence not user friendly.
Follow these steps exactly to Enable Push Notifications and Youtube on your Hacktivated 2G/3G :
1. Download and Extract this Archive to a folder on your Desktop : PushFix.zip
2. Copy the following files via SSH to /private/var/Keychains and set permissions of inject and nimble to 755 (using WinSCP > Right Click on File > Properties).