Ok,
Now I understand. The picture that your college posted, looks like our Radio application. I will test in 1h when I go to the car to see if AF is working.
The unit that we are talking about in this thread has codename AN-21-U and is running Android OS 4.4.2 (there was not and will not be (I think) an 4.4.4 android version).
There are many firmware versions. If you know how to extract the apks from firmware img you can use this link to download firmware(s):
https://yadi.sk/d/tbaxJYL9cJjKK/Firmware
Also, please ask the firmware version (not android version) that "guy" is using. Maybe we can help.
If you look deeper on the first list that I provided (
https://yadi.sk/d/tbaxJYL9cJjKK/System%20Apks) you will see that there are some folders with "system applications". Did you checked all the radio apks from that link?