iPhone 5 ''Charging'' loop problem

Okay, I've search throughout the web but I can't find a fix for my problem. Here's the situation :

-When I plug in my iphone 5 into ANY power source (wall charger, PC, car charger, etc.) it shows the Apple logo for about 2 seconds then shuts off for about 3 secs, then it shows the Currently charging sign and goes back to the apple logo screen. It's been doing that for about 3 hours.

-I can't make the IPhone show the cable + itunes sign.

-I can put the iphone in DFU mode but that's about it, my itunes recognizes my iphone as an iphone in recovery mode but I don't want to restore it since I didn't save anything so I want to avoid data loss. I might try it if I can't find anything, but that's my last resort.

-My IPhone is about 2 and a half years old.

-I'm currently running IOS 8.1

-My iphone's jailbroken but the loop didn't start just after I installed new packages so I don't think that's the problem.

-I've tried many methods and consulted many treads but most people just have the reboot loop or the blue screen loop, and these solutions don't work for me.

-Wondershare's Dr Fone program doesn't even detect my Iphone.

Thank you in advance for your answers.