The word is "any", not "n e", and you'll see by our guidelines that we expect real words to be used so that machine translation is reliable.
Uninstall the Rockbox bootloader as per the official instructions/manual, update your iPod in iTunes (make sure not to restore), install the newest Rockbox bootloader as per the official instructions/manual, and you're done. This is assuming iTunes won't let you update as-is without uninstalling it. Either way you'll still need to reinstall it.