Can't root phone after October security patch

[Sam1224]

My Nexus 6 has been rooted and working just fine for me for a few years now. I originally used the Nexus Root Toolkit to do everything and up to this point it has always worked.

I recently grabbed the latest build NGI77B and installed it using the toolkit but now I cannot get the phone rooted again.

Has anybody else experienced this?

Any successful workarounds?

I've tried everything I know to do: reinstalled drivers, switched cables and ports.

The specific issue is that ADB recovery device cannot be found. Even after I update the drivers it still indicates that it cannot be found.

Any help would be appreciated.

 

[anon(631531)]

Flash the latest image. Get it back to stock(like brand new). Start over with the root process, but don't use a kit. Enter the commands manually, one at a time, and it's better to learn that way. Read up on it, before you start it. Good luck.