[HELP] CM 10.1 Unofficial

Hello to all out there,

I am having a problem with my GT S5282. My cousin do some custom rom on my phone
The file name was "cm10.1-unofficial(gt-s5282)-junkybean(pre-alpha1.1)". When I reboot my phone, it got stuck on loading screen, CyanogenMod.

I want to get back my old phone, but I don't know how. I search on google and I came up to Stock Rom. Any helpfull tips
out there. I just want to get back my old phone. :crying:

Can't find any backup. Really need your help

*sorry for my bad english*