Originally Posted by Neontc
Or put it on an SD card since it seems like Internet connection is an issue.
Sent from my SAMSUNG-SGH-I337 using XDA Free mobile app
Yup sounds like Internet connection is the issue.
Neontc gave you the answer.
Download the apk files to a PC, connect your phone to the computer as a MTP device, and transfer the files to your sdcard.
Make sure Allow Unknown is checked under security in your settings, and open, and install apks using any file manager.
Download Safe Strap 3.72 and Towel root.