Install the Samsung USB Drivers on your PC first.
Flashing firmware is a deep hardware-level operation. If the process is interrupted or the wrong file is used, it can permanently damage (brick) your device. Are you trying to a phone that won't turn on, or just looking to the software? Update the software on your Samsung smart TV or monitor samsung gtc3520 flash file and tool
Multi Download and assign each file:
A flash file (also known as a stock ROM, firmware, or binary file) is the low-level software that controls the phone’s hardware. For the GT-C3520, this is not an Android OS but a proprietary Samsung RTOS (Real-Time Operating System). The flash file consists of several components: If you have separate