20250715 RSNAV S4 Pro/Ultimate updates

Warning

As this update includes XML update, before you update anything, please take a picture of all configuration under the factory settings options including AUO, Hstart option. Once XML gets updated all the known configuration will be lost and you need to configure them into previous configuration manually.

AGAIN, DO TAKE PICTURES OF EVERY FACTORY SETTINGS BEFORE YOU PERFORM FACTORY XML UPDATE. 

There will be a lot of errors due to car mode mismatch resulting scrambled screen in OEM mode, loss of MMI control etc. Once XML is updated, reset the system with 'Back' button pressed over 10 seconds or poking the reset hole with a paper clip once - You should feel a click.  Then the system will boot into Android giving you few minutes to correct factory settings to the previous configurations. Apply them manually according to the pictures taken before.  

For 9" version customers, Do not use the file for 1980x720 wide version. Also, do not use 9" version software on 8.9, 10.24, 12.3" products. 

1. Fixed Fahrenheit displayed incorrectly. 

You MUST set both Audi MMI System unit setting and RSNAV unit setting matching. Otherwise, the temperature display won't be matching. 

2. Reinstated USB DAC support option and it is now "Android Volume Control" option. With this function enabled, steering wheel volume knob will adjust both Android Media Volume and Audi Sound system volume simultaneously and display current Android Media Volume level in numeric. This is useful feature in some applications like USB DAC use. When this option is disabled, Android Media volume will be "fixed" into volume level set in Car Settings, and Android media volume will not be displayed.

3. Fixed MMI screen goes black occasionally when Android Volume Control is enabled(Previously, USB DAC Support).

https://drive.google.com/drive/folders/1bmA487QucmscUu3ZIFfIgu7G_fD0UQ9r?usp=drive_link