I don't know if somebody more qualified can do something but just for info...
compare between the 2 txt file system, one from original "russian" version and one from avic F700 , here's maybe the differences explaining why sound don't work :
russian igo txt :
[interface]
show_exit=1
maxzoom2d=6000000
width=800
height=480
vga=0
[rawdisplay]
driver="gdi"
screen_x=800
screen_y=480
highres=0
[gps]
port = 1
baud = 9600
[modules]
IBATTERY="NULL_BATTERY"
[sound]
use_os_volume=1
os_volume=255
[debug]
enable_buildings=1
[map]
3d_buildings=1
3d_landmarks=1
and following here one copy from the avic emulator i have from the avic F700 ( so maybe not the same as appradio, but there's more lines info, about sound and language...)
[device]
type="PIONEER746EW"
[interface]
skin="ui_pioneer"
default_day_color="COLORSCHEME~Pioneer Red Day"
default_night_color="COLORSCHEME~Pioneer Red Night"
tmc_events_icon_set="$tmc.spr"
small_tmc_events_icon_set="$smalltmc.spr"
show_kml_type=0
[rawdisplay]
screen_x=800
screen_y=480
class="landscape"
highres=0
[debug]
skip_eula=1
enable_roadshadow=1
enable_buildings=1
restart_mode_in_file=1
[folders]
data="\Storage Card\User\UserData\iGo"
tts_nuance="\My Flash Disk\APL2\iGo\ScanSoft\RealSpeakSolo"
secondary_app="Storage Card/usericon,USB Disk/usericon"
usb_trackexport_path="\USB Disk"
storage_trackexport_path="\Storage Card"
[gps]
port=7
baud=9600
default_latitude="0.0"
default_longitude="0.0"
[3d_config]
roadsign_lines_per_screen=20
[local]
dateformat="8"
language_lcid="1058"
language_key="ukrainian"
lang_path_hint="lang\Lang_Ukrainian_Pda.zip"
voice_key="Rom_f1"
voice_path_hint="voice\voice_ukr-f1.zip"
default_language="english US"
[regional]
units=0
[dynamiccompressor]
compressor="1"
a0="56806"
thrs="24703"
ratio="8"
gain="8"
[timezone]
reset_os_timezone=1
[keyboard]
panel_alpha="Ukrainian"
panel_numeric="Numbers"
panel_phone="Tel"
[route]
route_type="ECO"
allow_uturn="1"
[map]
map_mode="3D"
[navigation]
autoreplan_action="AUTO"
[smartzoom]
overview="1"
auto_follow_on="1"
overview_zoomlevel="3000"
[sound]
os_volume="135"
sound_muted="1"
voice_volume="57"
dynamic_volume_type="1"
dynamic_volume_voicemaxspeed="88"
os_muted="0"
if it can walk forward the problem , keep us on touch because resolving this, could definitly prove to pioneer we can do more with this unit than they want to make us believe....