Fair enough. Let's get this party started.
First thing is still to confirm which type of Bluetooth the OBD device is using. I thought I didn't have any Classic Bluetooth SPP devices, but then I remembered that the ELM327 OBD dongles are probably just serial ports, so after I found them and also the OBD port in the new (OBD-wise) car, I connected to it and then spoke with it using the
Serial Bluetooth Terminal app. Unfortunately that app doesn't have XMODEM(-1K) so now I am searching for a terminal app that does both Bluetooth AND XModem.
In the meantime, if you want to try talking to your OBD device anyway, these are stages that I went through:
Settings, Bluetooth = list of available devices:
View attachment 97389
Pair with ELM327 OBDII dongle:
View attachment 97390
Paired, ready for use:
View attachment 97391
Start Serial Bluetooth Terminal app:
View attachment 97392
Choose serial port (here only one choice - the paired OBDII dongle):
View attachment 97393
Connected and looking good:
View attachment 97394
Type ATI (attention, identify) command:
View attachment 97395
and OBDII dongle responds with ELM327 and version:
View attachment 97396