am have a board 220 and i want to upgrade it to the latest version i just wanted to know if it had be okay then i also wanted to know if there is anyway of backing up the old one incase i v problems so i can revert back.
then can i transfer the old setting or do i have to recionfigure manually 1 by 1

backup:
/system backup save name=<filename>
download that backup file and upgrade -- it should be ok