Check in firmware 2.1.2 source code. 2.1.2 fixes the following bugs: 1) /jp outputs incomplete data when number of programs is a multiple of 3 (this is likely a compiler bug); 2) program name does not handle the SPACE character correctly; 3) when using buttons to change port number, the range is limited to 255 (solution is to disable changing port number using buttons. no new features are introduced in firmware 2.1.2.