Should i upgrade my iphone 4 from ios 7.0.4 to ios 7.1?

I want to know If the ios 7.1 is great because I have a jailbroken iphone 4 ios 7.0.4 and if i upgrade I will lose my jailbreak?

IOS 7.1 patches the evasi0n jailbreak, so if you want to keep your jailbreak, steer clear. If your phone is a 4 (NOT a 4S), then it'll have a tethered jailbreak made sometime in the distant future. But trust me, it's a good bug fix update with a few changes here and there, but it's not worth losing an untethered jailbreak for. If you don't mind waiting and don't mind booting tethered from a PC every time you turn your phone off or it dies, then go ahead and knock yourself out.