Can any one explain this for me please ? and how to great it for my next device ?

del,0:/.System/gupdate.gcd
rrgn,154,2:/BUP_154.bin
xrgn,14,2:/Garmin/Updater/2586/0E.bin
xrgn,127,2:/Garmin/Updater/2586/7F.bin
xrgn,158,2:/Garmin/Updater/2586/9E.bin
reboot

THANKS