Firmware update, now no audio

[the_weasel]

Hi recently got a GS90C with the GPS and it came with the KPH firmware.
As I'm in the UK I wanted the MPH so updated the firmware with G90-ZX-A770-1110-S7H
Now I have no audio, any ideas why this has happened and how do I get it back please.

 

[Sunny]

Here's old firmware from 20141015.

• 20141015a_g90_a7la70_gps_zx_svn654.rar

Check this board for google drive links to firmware.

http://www.szdome.com/service-faq-page-2.html

https://drive.google.com/open?id=0Bw8LfG-2RaLhQUlOQ3BOai00Ymc&authuser=0

 

[the_weasel]

I used the link direct from Dome originally.
So tonight I put the KPH 1138 back on and audio worked again, re-downloaded 1110 and again no sound so returned back to 1138 and sound.
Having now used registrator viewer and can see speed can be changed on there, I'm happy with how it is now.

Strange others have used 1110 and not reported any problems.