When I tried this, per your instructions, I got a flashing backlight on the LCD. I was able to cure this by pulling the SD card and replacing the Image695.hex file with the one from the unpatched .ar file. Further digging, using Excel and Wikipedia for the Intel Hex format and I figure out that, at least for the V1.05 update file I have, the checksum for the second change should be 79. After doing that, the Ekocycle accepted the firmware without any drama. Now, to see if it skips updating cartridge capacity.