If you need to modify the keycode mapping table for your device, you have to perform the following steps: 1) Copy either an already existing table from the shipped mappings located in /lib/udev/rc_keymaps or write the currently active table into a file via 'ir-keytable --read > somefile' 2) Edit the table to your needs and test it via 'ir-keytable --write=somefile' 3) Make the change persistent by putting the file into /etc/rc_keymaps and add the proper driver, table and file name into /etc/rc_maps.cfg