Reinstall Samsung USB drivers, try a different USB port (preferably a back port on a PC), or change the USB cable.
: Download and install the standard Samsung USB Mobile Drivers on your PC. Reinstall Samsung USB drivers, try a different USB
Run the (e.g., ShpApp.exe or Flash Loader 7.5.4.exe ) as an Administrator. Step 2: Configure the Flash Tool Reinstall Samsung USB drivers
While holding these keys, re-insert the battery and connect the phone to the PC via USB. in the Flash Loader software. Reinstall Samsung USB drivers, try a different USB