Jailbroken Phone: Trying to install Apps using iTunes which I bought with my money

[iMore Question]

When I purchased these games from the App Store, it said I needed to be connected to iTunes or wifi to install them and when I connect to iTunes I get the message:

"This computer is not authorised for this phone"

I have done all the steps which others have mentioned to no avail:

Signed out

De Authorise

Authorise

Reset Computer

Reset Phone

Delete SC Info Folder

Anyone know how, if possible, I can do this?

I don't want to reinstall iTunes or update it. I have Version 6.1.2 iOs on my Iphone 5 and iTunes 11.

Any help would be greatly appreciated.

Thank you