A bit of research in Google revealed that:
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This software is made by BMW specifically for updating navigation systems.
There are two software components to your BMW navigation system: one is the operating system software (technically called “firmware”) and the other is the removable map disk. This info is for the firmware, not the map disk.
The update will not affect your current preferences and will not affect your stored addresses in memory, so you won’t have to reprogram anything.
What software do I have now? To determine what software (or firmware) version you presently have go to your setup screen by pushing “MENU” and select “Set” or "Setup". In the upper right hand corner you will see “SW x-x/xx”.
Now, look at the following table for the version number you currently have.
Version
V14
1-1/69 (7.7) (Mk I)
2-1/30 (Mk II)
n/a (Mk III)
V15
1-1/72 (8.0)
2-1/50
3-1/10
V16
1-1/72 (8.0)
2-1/60
3-1/20
V16.2
1-1/72 (8.0)
2-1/60
3-1/21
V17
1-1/72 (8.0)
2-1/70
3-1/30
V17.1
1-1/72 (8.0)
2-1/70
3-1/31
V18
1-1/72 (8.0)
2-1/80
3-1/40
V18.2
1-1/72 (8.0)
2-1/80
3-1/41
V19
1-1/72 (8.0)
2-1/80
3-1/50
V20
1-1/72 (8.0)
2-1/80
3-1/60
V20.1
1-1/72 (8.0)
2-1/80
3-1/60
V21
1-1/72 (8.0)
2-1/81
3-1/61
V21.1
1-1/72 (8.0)
2-1/81
3-1/62
V22
1-1/72 (8.0)
2-1/81
3-1/63
V22.1
1-1/72 (8.0)
2-1/81
3-1/63
V23
1-1/72 (8.0)
2-1/81
3-1/63
V24
1-1/72 (8.0)
2-1/81
3-1/63
V24.1
1-1/80
2-1/81
3-1/63
V25
1-1/80
2-1/81
3-1/63
So, what changes can I expect by updating to V25?
Older than V21 have a different interface. A new update will drastically improve the whole system, including faster data access.
New added features in Version 22
· Split screen.
· Cool “== BMW ==” logo when you start the car.
· The screen brightness is much better. …Can be seen through polarized sunglasses.
· The white lines mapping your route to a destination disappear after you reach your destination.
New features in Version 23
While V22 would show many streets with a route number (like SR581, A21, M10, etc.), after V23 is loaded the display shows actual street names.
New features in Version 24
· Route Magnet
· TBD
New features in Version 25
· Real time, Traffic Information (works with BMW assist. Contact BMW assist for details)
· SIRIUS capable
· Route preferences selection "via Freeway" and "avoid Freeway" is changed to "Via Highway" and "Avoid Highway"
· General visual and audio enhancements.
Supported Languages:
American English, British English, French, Italian, Spanish, German.
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Today I had the dealer perform the update and V27 was stamped on the CD. Will find out at a later date what the improvements are.