If you mean to add this code at the APPEND line of extlinux.conf, it didn't work.
I have already removed mylocale extension from the onboot list and I have also removed at all the "lang=" option from extlinux.conf, but still firefox is in greek.
I have already removed mylocale extension from the onboot list and I have also removed at all the "lang=" option from extlinux.conf, but still firefox is in greek.