Agree 100% with what was stated above all the tools and firmware versions really need to be placed in the support portal on the Canaan website...
Hello, pls check it out on our official website.
https://www.canaan.io/supports/file_downloadThe one issued on Aug 6th is the latest version, kindly note.
I do not see the firmware files for the Nano on the provided page. What am I missing?