I was too excited to upgrade the firmware on my GO720 with the new navcore_7.480.9084.gox20.cab, that I later found I had lost Speech Recognition on the device . The speech icon on the upper right corner was grayed ever since. My support_ars.dat file was still in the ARS folder, but all the other files in that folder had been updated as well.
My quick fix to this problem is very simple. Find the file "navcore_7.221.8572.gox20.cab" which should be in "My Documents\TomTom\HOME\Downloads\program\TomTomApplicationforGO520GO720GO920", and extract the old files in ARS folder in that CAB file back to the device GO720's ARS folder. Keep the support_ars.dat there. Start the device again and Speech Recognition will be enabled again.
TomTom works hard to disable that function on our GO720. I highly recommend to backup before attempting to push that OK to update button.
My quick fix to this problem is very simple. Find the file "navcore_7.221.8572.gox20.cab" which should be in "My Documents\TomTom\HOME\Downloads\program\TomTomApplicationforGO520GO720GO920", and extract the old files in ARS folder in that CAB file back to the device GO720's ARS folder. Keep the support_ars.dat there. Start the device again and Speech Recognition will be enabled again.
TomTom works hard to disable that function on our GO720. I highly recommend to backup before attempting to push that OK to update button.