I need to do the update from a mac.
Downloading the C firmware was simple.
It downloads a F-D4S-V130M.dmg which contains a D4SUpdate directory that has a D4S_0130.bin file.
This was harder.
Downloading gives you a S-DCDATA-002009MF-ALLIN-32BIT_.dmg which in turn contains a S-DCDATA-002009MF-ALLIN-32BIT_ app.
Starting this prompts you to select language (and if you need it region) - and then starts an installer.
This installer fails with the following error:
OK - so - some googling - here's how I did it.
With the dmg still open - crack open a terminal.
cd /Volumes/S-DCDATA-002009MF-ALLIN-32BIT_/Packages/Distortion\ Control\ Data.pkg/Contents cp Archive.pax.gz ~ cd gzip -d Archive.pax.gz pax -r < Archive.pax cd tmp/jp.co.nikon.installer.apppkg/Nikon open .
That should open a finder window with the .bin file sitting in it. Did for me - then you just do the same thing as for C above.