Found elsewhere on this forum:
"I found the following post from Nils K on 9/22/2004 ....IT WORKED FOR ME ....
In my case, I left the CF card in the MR-8 and turned the USB "on" , then used these steps to copy and install the unzipped file mr08_mv1.21 ...However, I probably could have just inserted the CF card into the computer to transfer the unzipped file.
>>>>>>>>>>>>>>> Nils' instructions follow >>>>>>>>
A couple of things may be wrong here...
Firstly, you have to have room to spare on the CF card in the MR-8. If you do, then try this:
1) Unzip the contents of the zipped file to the same location as the zipped file (i.e. the PC hard disk)
2) Mark the file with the cursor.
3) Press Ctrl-C to copy it.
4) Mark the MR-8 root folder (The F:-drive on your system, if I get you right)
5) Press Ctrl-V to insert it (i.e. paste the file to the CF card on the MR-8)
6) When the file transfer is over (red light on the MR-8 is out) disconnect the MR-8 from the PC (see the manual for how to do this properly).
7) Turn off the MR-8.
8) While holding the STOP button on the MR-8, turn it on again.
9) The MR-8 asks you to confirm upgrade "VERSION UP" by pressing RECORD and YES. Do this, and wait for the MR-8 to finish its upgrade.
10) Turn the MR-8 off, and then back on, and you are done."