The solution to the problem could be to check the connection between the PC and the target, make sure the target is powered on, and ensure the correct COM port is selected.
The latest version released is 2.6.0 and it's available from the homepage of the developer. Try downloading that version and test it accordingly.
Flash Sony software on your unlocked Xperia devices.
Program microcontrollers and serial memory devices using EETools.
The Flashloader switchers allow you to switch between performance and stock soft
The solution to the problem could be to check the connection between the PC and the target, make sure the target is powered on, and ensure the correct COM port is selected.
The latest version released is 2.6.0 and it's available from the homepage of the developer. Try downloading that version and test it accordingly.