SUT LR opening problemYou receive this error because you're trying to run the program on a computer with 64-bit architecture. In order to fix the issue, right-click the program's launcher, select Properties, and open the Compatibility tab. Check Run this program in compatibility mode for box and select Windows XP from the drop-down list. After that, press Apply, OK, and then run the program using Administrator rights. If you still have problems, I recommend that you apply the solution that you can find on the official forum.
SUT LR is a free program that enables you to update your Android phone to the latest firmware version. You can connect your Android device to your computer, select the image file that contains the update and the application will run and install the components.