Hi @vpeter I followed all the instructions there plus read further here: remote:rr_bluetooth [CoreELEC Wiki]
This is the input device for RC212:
I: Bus=0005 Vendor=1d5a Product=c099 Version=0003
N: Name="RC212 Consumer Control"
P: Phys=50:41:1c:4c:47:fd
S: Sysfs=/devices/virtual/misc/uhid/0005:1D5A:C099.0001/input/input7
U: Uniq=f4:22:7a:4a:4f:a5
H: Handlers=kbd event7
B: PROP=0
B: EV=1f
B: KEY=306ff 0 0 483ffff17aff32d bfd4444600000000 1 130ff38b17c000 677bfad9415fed 9ed68000004400 10000002
B: REL=1040
B: ABS=100000000
B: MSC=10
Ran evtest and captured 3 keys, including the “select” one below:
Event: time 1694178917.868304, type 4 (EV_MSC), code 4 (MSC_SCAN), value c0041
Event: time 1694178917.868304, type 1 (EV_KEY), code 353 (KEY_SELECT), value 1
Event: time 1694178917.868304, -------------- SYN_REPORT ------------
Event: time 1694178918.014526, type 4 (EV_MSC), code 4 (MSC_SCAN), value c0041
Event: time 1694178918.014526, type 1 (EV_KEY), code 353 (KEY_SELECT), value 0
Event: time 1694178918.014526, -------------- SYN_REPORT ------------
Created the file for mapping select to enter:
nkcore:~/.config/hwdb.d # pwd
/storage/.config/hwdb.d
nkcore:~/.config/hwdb.d # cat rc212.hwdb
evdev:input:b0005v1d5a*
KEYBOARD_KEY_c0041=enter
KEYBOARD_KEY_c0040=o
KEYBOARD_KEY_c01a2=tab
Ran the following commands with no errors:
udevadm hwdb --update
udevadm trigger -s input
Restarted the box, but the OK/enter button still doesn’t work unfortunately 
Any further suggestions? Nothing urgent as I can control it via CEC though.