: Connect the locked device to the PC and ensure Samsung USB Drivers are installed.
(All-in-One) is a specialized utility primarily used for downloading official Samsung firmware and performing service tasks on Android devices. Version 1.3.4 (released around 2021-2022) expanded the tool's capabilities to include "All-in-One" features such as FRP bypass and service mode modifications. Core Functionality samfirmtool-aio-v1-3-4-free-download-2022
: Enables or switches modes such as MTP + ADB , allowing for deeper system communication. : Connect the locked device to the PC