: Restore phones that are stuck in a boot loop or have a corrupted partition. Bypass FRP
The MT6789 is the system-on-chip (SoC) designation for the widely popular MediaTek Helio G99. Released in mid-2022 and built on a modern 6nm manufacturing process, it powers a vast array of affordable yet capable smartphones. You will find the MT6789 in popular models from Xiaomi, Infinix, Tecno, Realme, Poco, and many other brands that dominate the mid-range and entry-level segments.
To mitigate the vulnerability, device manufacturers should:
The official MediaTek Flash Tool, paired with a background bypass script to accept unsigned images. mt6789 auth bypass
These are not "auth bypass" tools, but they reveal that while the chipset is a fortress against flashing, it is not invulnerable to sophisticated exploitation from within a running system.
echo 'SUBSYSTEM=="usb", ATTRidVendor=="0e8d", MODE="0666"' | sudo tee /etc/udev/rules.d/20-mmtk.rules sudo udevadm control --reload-rules sudo udevadm trigger Use code with caution. Step-by-Step Implementation Guide
bypassing authentication allows users to unlock bootloaders on carrier-locked or strictly restricted devices, enabling root access or custom ROM installations. : Restore phones that are stuck in a
Improper use of flash tools can lead to hard-bricking the device. Always maintain a full backup of the device partitions (preloader, nvram, etc.) before making changes.
Run python mtk da seccfg or similar commands to disable protections. 2. MTK Auth Bypass Tool v5+
Unlike older chipsets (V5) that were vulnerable to the kamakiri2 exploit, the MT6789 belongs to the "V6" secure boot architecture. These devices are generally patched against the legacy exploits used to bypass and DAA (Download Agent Authentication) . Known Bypass Methods You will find the MT6789 in popular models
The key takeaway is proactive security. Regular updates, careful device handling, and awareness of specific attack vectors provide the strongest defense. As MediaTek's security matures, the balance shifts increasingly toward prevention rather than post-exploitation detection. The MT6789's story is not yet complete—new vulnerabilities will emerge, new patches will follow, and the authentication bypass cat-and-mouse game will continue.
The Download Agent coordinates firmware flashing operations. CVE-2025-20658 and CVE-2025-20657 reveal permission bypass vulnerabilities in the DA due to logic errors. These could lead to local escalation of privilege if an attacker has physical access, with no additional execution privileges needed and no user interaction required for exploitation.
Disabling physical BROM hardware lines on the motherboard circuit.
A popular open-source tool (based on Python) used to exploit Mediatek chipsets, including MT6789, to bypass security.