just got the latest firmware off the reprap site (RELEASE FILE - "RepRapFirmware-057a-16-01-2014")
When I perform the 'M105' check on Arduino 'Serial Monitor' I get the result;
serial: M105
okT:9.8 B:22.8
but when i perform the 'M115' check i get the result;
'invalid M Code: M115'
........... is this a problem???