Select your phone model from the dropdown menu to begin your repair or unlock process. Safety Tips and Best Practices
Follow these sequential instructions to install the software and register the hardware components correctly. Step 1: Install the Samsung USB Drivers Download the latest Samsung USB Driver package. Run the executable file as an administrator. Z3x Samsung Tool V19.1 Setup
Never uninstall the old version manually before updating – the loader handles everything. Select your phone model from the dropdown menu
Connect your Z3x Box or USB Dongle containing the smart card to your PC. Z3x Samsung Tool V19.1 Setup
Before carrier unlocking moved completely to remote server databases, V19.1 targeted direct on-device locks:
The tool also includes built-in manuals and step-by-step tutorials for each supported model, automatically displaying required cable information and procedure guidance for each operation.