increase the NAV volume?
 

After finally discovering that the British English language choice was off the screen above the US English choice and changing it to the British version, I find the British lady to be much quieter than the US lady when giving NAV directions. I have the NAV volume preset set as high as it goes and she still can barely be heard while driving.

Is there any way to increase the NAV volume beyond the highest preset?

Also, I noticed in a YouTube video on using the icarsoft i930 that the message center on that Jaguar said the bonnet was open, but on ours it still says hood and trunk with the language set to British English VS bonnet and boot. I haven't tried other languages yet to see if the message center language changes. Should it change?