The different versions might be because of different advertisements. I downloaded a firmware upgrade some time ago that was supposed to improve compatibility with 8x and 16x media. It seems that the "firmware upgrade" was a ruse to install advertisements.
My DMR-E85H does not display firmware version, as far as i know.

Gene wrote:

USA site = version 150 max, Canada = version 152 , I have seen a
version 158 in Europe. As for the Setup display of the version number,
it shows 00000103 after "any" update - it never changes from the
00000103. I was hoping that someone knew a better way to view
the current firmware version installed.


--
Mike Walsh
West Palm Beach, Florida, U.S.A.