Wait for the progress bar to show "Success" or "All Is Done." Important Safety and Legal Considerations

: Disables the secure boot authentication (SLA/DA authentication) required by brands like Xiaomi, Oppo, and Vivo, removing the need for authorized service center accounts.

This is the standard mode for most basic operations like FRP bypass, screen lock removal, and factory resets. In this mode, the device is connected in its pre-boot state, and the tool communicates over the USB Virtual COM port to directly access the phone's memory before the Android OS loads.

Open the extracted folder and navigate to the Drivers sub-directory.

The MediaTek (MTK) GSM Sulteng Tool has established itself as a premier utility for smartphone repair technicians and Android enthusiasts. Version 139 (V139) brings critical updates designed to simplify device servicing, pattern unlocking, and firmware flashing across a massive list of MediaTek-powered smartphones.

Disconnect your phone and power it on. The initial boot may take a few minutes. Troubleshooting Common Errors

If the tool closes unexpectedly, check your Windows Defender history and restore any quarantined files belonging to the GSM Sulteng folder.

You can download the MTK GSM Sulteng Tool v1.3.9 from the following link:

You can find download links and video tutorials through community platforms like MTK Gsm Sulteng Tool v1.3.9 Download or YouTube .

Disables the secure boot mechanism to allow third-party flashing tools to work.

Remove Pattern, PIN, or Password locks without data loss (on supported older devices) or via factory reset (newer devices).

Disclaimer: Ensure you download the tool from reputable GSM hosting forums or trusted tech blogs to avoid malware disguised as setup files. The archive is typically password-protected; the universal password for GSM Sulteng tools is usually gsm sulteng or official . Step-by-Step Installation: Download the . Download and install the latest 7-Zip or WinRAR extractor.

Remove Factory Reset Protection on Google-locked devices with a single click.

The V139 update consolidates several specialized service routines into a single, streamlined user interface. 1. Advanced Lock Removal

Includes basic functions for EDL mode servicing on select Qualcomm models. Supported Brands

Supports Redmi 9, Note 8 Pro, Note 10 5G, and Poco X3 GT.