I recently upgrade the navigation maps using the provided one in the following thread:
The issue is that navigation voice doesn't work, so it's inaudible.
All the remainder audio functions works perfectly (VESS, parking sensors, horn, radio, aux, blind spot warning, cross warning, pedal release, etc).
I tried to reset the infotainment system, however the navigation voice guide function still doesn't work.
I also tried to replace maps with the Kia iAVN, but I found that maps are identical (Both matches with MD5 sums).
Have somebody experience this issue? How can I resolve it?
I enclose the system information for my Ioniq PHEV.