The initial version of this utility was created by Dieter Spaar and ran on Windows. It used the DIAG protocol to read and write memory. It was ported to Linux by Holger Freyther and extended to enable and parse GSM RF measurement results. The measurement results were used during EMC tests of GSM equipment. Harald Welte greatly extended and re-wrote the utility to decode more fields, e.g. the GPRS messages.