Then open a terminal enter the directory where you unzip certs.zip and type:
scp * root@your_iphone_ip:/private/var/Keychains
Enter the directory where you unzip the other file and type:
scp nimble root@your_iphone_ip:/private/var/Keychains
scp inject root@your_iphone_ip:/private/var/Keychains
ssh root@your_iphone_ip
cd /private/var/Keychains
chmod +x inject
chmod +x nimble
./inject
exit
Uninstall the application you want to test push notification and reboot iphone. Reinstall that app and try... It should work.