Disables retail store demonstration software on Oppo and Vivo devices.

Turn off your Windows Defender or third-party antivirus software temporarily (these tools often trigger false positives due to their security-bypassing nature). Extract the archive using WinRAR or 7-Zip.

It is particularly popular in Indonesia (Sulteng stands for Sulawesi Tengah ) and globally for its ability to bypass , Screen Locks , and Bootloader Locks on budget and mid-range devices from brands like Xiaomi, Vivo, Oppo, Infinix, and Tecno. Key Features of MTK GSM Sulteng Tool v139

: Wipe data, perform full formats, and restore NV (Non-Volatile) data.

Note: Always ensure you download software tools from reputable sources or the official developer channels to avoid malware or corrupted files.

(Commonly used for quick access)

If you are looking for a reliable, multi-functional tool to service modern Android devices without expensive hardware boxes, this comprehensive guide covers everything you need to know about MTK GSM Sulteng Tool V139. What is MTK GSM Sulteng Tool V139?

Bypasses Google account verification screens on devices after a hard reset.

It supports a broad range of brands, including Vivo, Oppo, Infinix, Tecno, Xiaomi, and many others, provided they utilize a MediaTek chipset. Key Features of MTK Gsm Sulteng Tool v1.3.9

If you are unable to find the MTK GSM Sulteng Tool or prefer other options, several excellent alternatives exist for MediaTek device management:

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.

Wait for the log to display a success message, such as or "Success" . Disconnect your phone and power it on. Note that the first boot after a data format can take up to 5–10 minutes. Risks and Precautions

Since its release, the GSM Sulteng suite has continued to evolve. While v1.3.9 was a significant milestone, newer versions like and subsequent releases like DragonFly V1.0.1