Hey all, so I've been messing around with the 2d72 and software, so far it's terrible. I put a 9 volt battery across the scope leads and it reads somewhere around a couple hundred mv. I can see Waveforms but the voltage readings are so far off I can't possibly use this scope to diagnose anything. Plus the scope randomly shuts off when hooked up to the PC. Is this just firmware update stuff? Or something more?