Q: Unable to Downgrade iOS 7 to iOS 6.1.3

Hi,

i have using iPhone 4. i have updated my OS to iOS 7.0.4.

i have used a procedure to downgrade my OS.

here is the URL : http://www.ibtimes.co.uk/articles/507817/20130921/ios7-gm-downgrade-ios6-iphone- ipad-ipodtouch5.htm

in the end i have found following error.

• Error 3194
• This device isn't eligible for the requested build

http://support.apple.com/kb/TS4451

Please help.

my iPhone working very slow. i can'nt play games properly.

Thanks in advance.