I don't use ECMSPY itself. I program manually and use excel spreadsheets. Old school.
First I go to the ECMSPY website to determine where in the EEPROM are the particular controls, ie a fuel map, fan turn on temperature, active muffler configuration, etc.
Then I take the Hex data that is in that byte or bytes and convert (and interpret) it to decimal that I can understand. I change that data and then convert it back to Hex data. I change the setting to the new Hex data and upload the change to the bike. I write it in Excel so when I make a change it shows me what the hex data should be. Makes it easy. You can download my
Excel spreadsheet to see what I mean. Change a temp or rpm and notice how it changes to Hex data. You can also look at the excel formula to see how it works.