1. A method of converting data in a file, comprising: checking for a first data portion of a plurality of data portions in the file, the first data portion having a first data value; reading in data from a second data portion of the plurality of data portions; decoding the data in the second data portion of the plurality of data portions; performing a checksum operation on the decoded data from the second data portion if the first data portion having the first data value is not detected; and skipping the checksum operation on the decoded data from the second data portion if the first data portion having a first data value is detected.