Assuming you've got the RNEG variant of Sat Nav (your quoted current firmware number certainly fits the bill), then firmware updates do offer small improvements to older installs. Normally it's to do with Bluetooth connections or compatibility issues, nothing major or earth shattering, but useful all the same. There was a fairly major update released earlier this year(?) which added a (very) little to the Sat Nav. The update disc can be purchaed from Citroen if you've got a local dealer you don't mind visiting - I think costs vary from a few pence to a few pounds, but not much all the same. You can also download a copy of the firmware from such sites as
http://gpsunderground.com/forum/car-nav ... t-citroen/" onclick="window.open(this.href);return false; but make sure it's the right one for your car, and it's essential that you have the engine running when you do the install (around 20-odd minutes) so that the car doesn't shut down into economy mode part way through an install. On the RNEG variant, you can do the update whilst driving - but don't rely on your Sat Nav whilst driving as it won't work until the update is complete ! I don't think any of the firmare updates have cured the mis-reporting of speed camera speed limits yet

If you go down the route of downloading the firmware from the internet, then - as with anything downloaded from t'internet - you do so at your own risk...... but I've not encountered any problems with downloading the firmwares yet

You can update the firmware buy burning it to a disc and sticking it in the CD slot, or by putting it on an SD card (RNEG variants) and put it in the SD slot.
The firmware upgrade won't update the Sat Nav database, but these can be obtained from the same sources as listed above !