Arduino AVR Boards update 1.6.21 broke Chinese Nano uploads

I installed the latest update for the boards on my Mac OSX Sierra (10.1.6) and uploads to my chinese nanos stopped working. I reverted the package back to 1.6.20 and it immediately worked again.

I have the extra drivers installed I believe (updated a month ago?) How To Use Arduino Nano Mini Pro With CH340G On Mac Osx Yosemite

Thought you might want to know about this.

(deleted)

jeffwrule:
I installed the latest update for the boards on my Mac OSX Sierra (10.1.6) and uploads to my chinese nanos stopped working. I reverted the package back to 1.6.20 and it immediately worked again.

I have the extra drivers installed I believe (updated a month ago?) How To Use Arduino Nano Mini Pro With CH340G On Mac Osx Yosemite

Thought you might want to know about this.

Yeah, we know about it.
It isn't broke!