Originally Posted by ccfj1

Lol, I don't like them either

Then drag and drop into the open UltraIso session (back where you found it, "V-2/RR/0101/BMWC01S/app_sw").

The nav unit doesn't allow it to "update" with the same software as already installed. So you have to fake the SoftwareVersion.
do the following: also extract the 2 .tbl files from the directoy:
<drive>:\V_2\RR\0101\BMWC01S
Open it in an HEX editor (like Freeware, PSPad PSPad - free unicode developer editor, handles near any syntax like HTML, PHP, XHTML, JavaScript, ASP, Perl, C and many other languages with HEX editor, multilanguage interface)

In the first line you find something like: 31 30 30 30 This means: 1000 So: Software-Version 10.00
Just edit the last 30 to 31 and you nav unit will think it's a new Software Version and you can update your v31without prior downgrade to V29

The next time you update, you can edit it back to 0800 then 0801 again...

Save the UltraIso image as v31.iso, then burn a cd ad 1x speed.

That's it.