Default Cant install CM11

I was on CM10 and noticed that OTA CM updates no longer work. So as usual, I installed the latest TWRP, downloaded the latest CM11 nightly and proceeded to install. Every time I get an error.. something about bootloader. There is no need for me to update my bootloader because I already have the correct one. I checked.

I thought maybe the problem is TWRP and tried Clockwork. Same error. assert failed: getprop("ro.bootloader")... and then it lists differnt I747 models... then gives (Status 7) on the bottom

Why cant I update to CM11?

Thanks.

If it helps my bootloader is I747UCDLK3.