This is my first post here

I have a plan to replace my RD4 with RD45 radio (I need USB and BT). I already bought RD45 (version with black front plastic in attachment) from aliexpress but a little different version.
The first thing is front plastic... I tried to change it but it does not fit, the only solution is to break the plastic teeth... Is there some other solution?
The second thing is related to the antenna. On my old radio, there are two antenna connectors, on the new one, there is only one connector. Is this configurable via diagbox somehow? I tried it a few days ago and I did find a signal for my favorite radio station when I tried it outside of the city. At the same location, my old radio signal was perfect. I replaced it one more time to check and with a new one was definitely missed. In the city (area with a stronger signal) radio station signal is perfect with both devices.
The third thing is my "old" display. I have a type-c display but with old software. What is a minimum software version which supports BT/USB?
And the last one, if I change the front plastic, would be button TA/PTY work as is or as MUTE?
Thanks
