I've uploaded it for you. Flash in Fastboot mode with the integrated script...
https://drive.google.com/file/d/1BNco4FTzXRq_TbAOf0tASf3QPTWqBYBj/view?usp=drivesdk
A clean install is always recommended but if you are on stable you should be good with a dirty flash and just Wipe Cache and Dalvik because Beta is newer than stable...