Sorry, didn't read the previous post very well.
On the Pioneer website you go to the "downloads & Manuals" under the Help Centre and enter the F900BT details in search for product...which takes you to;
https://www.pioneer.com.au/Help%20Centr ... mware.aspx
AVICF900BT mapping software upgrade
Password authentication for the CNSD100FM Navigation upgrade disc for the AVICF900BT
Please read the instructions included in the CNSD100FM before commencing.
Click here to download
When you click on the above link you go to.....
https://www.pioneer.com.au/unlockcodeCN ...