iOS 7.1.2 FOR IPHONE 4 GSM users, this is best for people with slow internet where ur files crash again and again

To install iOS 7.1.2

1. download the ipsw file
2. go to itunes and hold shift key on your windows pc and click restore, navigate to that folder where the file downloaded and click, it will download right away
3. wait a while itunes restores
4. Enjoy

IT IS LOW SIZE BECAUSE THIS IS A .TORRENT original size 1.12Gb