I try the link, but it doesn't work in my situation.
my iphone5 running on 7.1.2 was jailbroken before, I need to send it in for repairs so I uninstall cydia using cydia itself, now I want to re-install cydia cydia it says it is jailbroken.
any simply way to install cydia back? I could not restore it as apple stop signing 7.1.2.