Why does Mio Digiwalker c220 Hardware ID changed

SOURCE: Mio P550 how to change hardware id

Do a hard reset. Pull batt. let stand for 30 min or more.

SOURCE: MIO DIGIWALKER NOT TURNING ON

I have fixed my son's unit twice with the same problem ove the last 18 months.
First remove the 4 screws from the corner on the back.
Then gently pry the back off being careful of the speaker wires attached to the main board.
You can't miss the battery as it's the biggest thing there. Follow the wires to the plug which will probably be hidden under a piece of black tape. Unplug the battery and let it stand for 10 minutes. Plug the battery back in and reassemble!

SOURCE: I have a mio digiwalker c220 and it needs updated

use your pc softwhere disck . up load them

SOURCE: I have a Mio Digiwalker C220 and I need to update

I hate these things but they do sync with microsoft. I was unable to find a proper driver too but did find out that MS SYNC

http://www.microsoft.com/windowsmobile/en-us/help/synchronize/activesync-download.mspx

was what I needed to be able to talk to the device.

SOURCE: MY POI in Mio C220

The manual doesn't match the software :)

This has been driving me crazy too.

Answer:
You can't do it from 'cockpit' view.
Press 'Menu -> Home -> Map -> Bottom right corner button (to show 'route to', 'add via'...) and the rightmost button is 'Add POI'.

To get back to cockpit view, press 'Menu -> Home -> Cockpit'.