[Q] How to go back to stock rom with a unlocked, 30.BC bootloader topic

Here is the problem.

I updated my xt1058 to 5.0.1 , so my bootloader was updated to the 30.BC version. It still is unlocked and I've TWRP installed too working good. After the update, a few days later using the stock rom, my phone got stuck on a bootloop, even after I wiped everything using TWRP the bootloop continued. In order to continue using the phone I installled the official CM12.1 rom over the stock, did all the wipes and then I could boot and use the phone.

My problem is that CM12.1 isn't fully functional yet, and I get random reboots, signal loss, and some apps crashes the phone and I really wish to come back to stock rom since I miss some stock features. There is a way to do this or I have to wait for a 5.0.1 SBF appear? And there is really no way to go back to stock 4.4.4 because the bootloader update right?

Thanks in advance for the help!