[Q] Backup won't restore. topic

So I installed the lateat CM12 nightly, wasn't really impressed yet and went to go restore my backup and once it's done restoring, it get stuck at the bootscreen animation. Just keeps going and going abs going. I used the latest cwm touch recovery as CM12 is not compatible with MultiROM. I would just flash the factory img back but my computer decided to it doesn't ever want to recognize adb avid fastboot on Linux.

Anyone know where I can find a flashable zip for the factory 5.0.1 ROM? Any help would be appreciated!