I believe it is also useful to add the argument “repos=NULL” so that R knows you are installing from a zip or binary, and, instead of using path (which works of course but is cumbersome), do this
install.packages(file.choose(), repos=NULL)
and look for the windows browser that opens up from the file.choose() command as it may be obscured by other ‘things’ on the screen. Then simply use that windows browser to drill down to the xxm.zip file and select it. If you omit the repos=NULL argument, the installation may not complete successfully, I think.