You guys got another newbie on your hands! I just got a new DS203 and am struggling with the user interface. Found Gabonator’s G251 and like the looks of it. I have downloaded the file from several different places and copied the hex file to the upgrade folder (V3.12C). It seems to accept the file, but when I turn the scope off/on I get a mostly grey screen with a banner in it that says “Frequency 1.00 kHz” and everything is frozen. I have been able to download the latest firmware (APP_V110) and bring the thing back to life as I received it. I started with Hardware Ver V2.72 SN #7D19A881 SYS Ver 1.60 DSO APP (plus A1) Ver 1.10. Most of what you guys are talking about is waayyy over my head, but I feel I ought to be able to install the new interface. What am I doing wrong???