Note also that on the Mac those .bin files change name once downloaded so you cannot easily tell which file is for which lens unless you DL them one at a time. The GF1 file maintains its name..
Jack,
The only time a download file on Mac OS X, downloaded with Safari, will
"change its name" is when Safari is configured to 'Open safe files after downloading'. See the Safari Preferences panel below:
What it does, in the case of the Panasonic fw updates, when this is set is automatically expand the .zip archives to their .bin executable contents. E.g.: the download zip file
FS014045V12.zip is expanded to the
ES100112.bin executable file for use in the camera. If you turn off the option, you can download all the .zip files with no ambiguity regards their names, the names will be as listed in the download page.
I strongly recommend people turn off this option as I have done in the image above. It is a security risk first and foremost, and it confuses people as well, in my experience. I am not sure whether FireFox has a similar option but I would recommend the same thing there.
The other issue I see on Mac OS X when it comes to these fw downloads is the '.bin' file extension. On Mac OS X, '.bin' is a known file type for an old type of encoded interchange file format (MacBinary) which dates back to internet file sharing in the 1980s*. If the
ES100112.bin is accidentally double-clicked, Mac OS X believes you want it to be decoded and generates a
ES100112.bin.cpgz file from it, which is junk.
I hope these notes helps make what is happening regards downloads and file naming a little more transparent.
* MacBinary format, available in both an ASCII based '.hqx' form or the binary based '.bin' form, encodes the two-fork Mac OS file structures of pre-Mac OS X days into a simplified byte stream to ease file transfer using systems that did not recognize the Mac OS file structure.