A method for upgrading data in a system adapted to implementing one or more programs includes a) loading a new program into the system and a version adapter for changing the old data previously stored in the system; b) generating new data adapted to the new program by processing the old data using the version adapter; c) storing the generated new data in a separate memory area; d) determining whether the new program operates normally by implementing the new data; and e) deleting an old program and old data if the new program is determined to operate normally.