Default android 4.1.1 bootloader needed

ok so the long story, my phone was stuck on 4.1.1 and would not update to 4.1.2 or 4.3, so i tried to install cyanogenmod 10.2 and didnt much care for it, so i decided to go back to just the stock 4.1.1 i got the DLK3 image and used odin to install it, but now i keep getting stuck at the samsung glowing boot screen, ive read you need to install a new bootloader and ive tried to find a few but a couple of the file download sites are down, so does anyone have a working link to a boot loader? thanks gt