[Steve_M_Sport]

This definitely works to enable the boot button above the OBD port to close the boot as well as open it on an F31 with iDrive5. I have coded mine and it works.

This is in the HKFM2 CAFD module

3008 USER_LOG_HKL_ROCKERSWITCHPOS1, 06
-> HKL_ROCKERSWITCHPOS1_BUTTON_TYPE

Right click on Werte=02 (second entry under "Ausgelesen")
Choose edit and in the entry box at the bottom of the screen change "02" to "05"

Also to enable the key fob button to open & close the boot on an F31 with 1 press rather than keeping the button depressed to close the boot you need to code this

300B ...REMOTECONTROLLIFTGATEBUTTON...section...
I went to ...REMOTECONTROLLIFTGATEBUTTON_LONGPRESS_CLOSE..

I changed the Werte value from '01' to '00'

This is logical as the ...._LONGPRESS_OPEN Werte value = '00' as the boot opens with 1 press of the key fob button.

Both tested & work perfectly