I try to explain it as good as I can.
Okay, I have a HTC Desire and an UHV Prem (VW), it works well.
Yesterday I bought a HTC Desirce X (DX for short) for someone else and I tried to install the RSAP app (personal stake - DX could be my next phone).
First of all I successfully rooted my DX. Then I installed the booth apps and choose "generic" files.
First try:
- turn on BT (visible)
- search for phones, select the "HTC Desire X" and then I should confirm the code
- I did it and after a few seconds there was an error message -> can't connect (analogous) - don't know why

- I did that 3 times, but always the same message
- and now the miracle: I did nothing. In the meantime the car tried to connected to known profiles and *BING* my DX was connected as user "Desire" - my old profil. I was able to do a call and there was no reception on the phone GREAT.
BUT
I turned off my car and my phone did nothing to cancel the connection to the car öÔ
Reception: none
Status: connected to VW UHV PREM
So I turned my car on but it want connect to my phone again. I switched BT at DX off and on again. Nothing.
Car off - on - nothing.
Tried the regular way to connect the phone - not possible.
All off, all on - automatically connection as "Desire" - works.
So it is a lottery if phone connects to the car and in every case the phone didn't notice that the connection to the car is already dead if I turn my engine off.
Any idea?
I did activate the log function - where/how to upload?
"The extension txt is not allowed."
Don't know why my FSE thinks my DX is my old Desire

Greetings from Germany