TomTom One v3 no sound after Navcore 9.510

Hi,
I'm relatively new to the updating scene and wanted to update my One V3. I used downunder's Navcore 9.510 update file and now my config is like this:
TTGO.BIF:
DeviceName=TomTom ONE
DeviceVersionHW=ONE (v7)
BootLoaderVersion=53006
ApplicationVersionVersionNumber=9510
ApplicationVersion=1234792.1
CurrentMap=United_Kingdom_and_Republic_of_Ireland
CurrentMapVersion=705.1485
TTGO.BAK:
Not Found...
TTGO.ORI:
Not Found...
TTNAVIGATOR.BIF:
Not Found...
Which map shall I download for UK and I cannot get the sound to work. I have used the soundfix option from Downunder but still doesnt work?
Any help? Thanks

Have you give it a reset for at least 20 seconds.

Yes. Don't know what's wrong with it.

UPDATE:
Still no sound, but all I hear from the TT is a fuzzy static sound. Can anyone provide an insight?