This has made the MT6789 one of the most attractive targets for forensic vendors like Cellebrite and Magnet Forensics (though they rarely disclose such low-level exploits publicly).
This is a last-resort, high-risk hardware intervention that some users have reported as a workaround, although it is not a guaranteed solution and should be approached with extreme caution. The method involves opening the phone, identifying a specific test point on the printed circuit board (PCB), and shorting it to ground. This forces the device into a special mode where the authentication is momentarily bypassed.
If the device won't stay in the correct mode, try connecting it without pressing any hardware buttons. ADB Force:
For the MT6789, specifically, tools must handle the updated secure boot protocols. mt6789 auth bypass
Most open-source MediaTek exploitation toolkits are written in Python. Install Python 3.9 or newer.
You can use dedicated open-source tools designed for MTK chipsets, such as the mtk-bypass or MTK Client utilities widely available on GitHub. Ensure the version you choose explicitly lists support for the MT6789 (Helio G99) chipset. Execution Steps
: A valid .bin file specific to the MT6789/Helio G99, often found in the stock firmware. The Security Challenge: V6 Protocol This has made the MT6789 one of the
: Various versions (v5–v9) claim to support "fresh MTK chipsets" to disable DA/Auth requirements, though these often require specific drivers like UsbDk or libusb to function. General Technical Requirements
: Modern MT6789 devices (like those from Tecno, Infinix, and Xiaomi) use Preloader Auth V3 , which requires specialized loaders. Primary Tools & Methods
The only guaranteed method is to obtain the official authorization file for your device. This is not a "bypass" but a key. While some forums attempt to distribute these files, they are strictly confidential and tied to specific hardware signatures. Your best bet is to: This forces the device into a special mode
, standard bypass tools often require a "crash" method or specific drivers. Preloader to BROM Crashing
However, for millions of MT6789 devices already in circulation, the vulnerability is permanent. From a forensics perspective, this chipset has become the "golden bullet" – enabling full physical extraction on budget and mid-range Android phones previously considered secure.
The MT6789’s boot chain is only as strong as a register the ROM forgot to lock. And that register? It’s still wide open.
: Uses a "Bypass Auth" option for BROM mode and an "Advanced Auth" option for Preloader mode. The "CPU Drill" Method
Before diving into the bypass mechanics, it is essential to understand the security barriers MediaTek implements. The Role of BootROM (BROM)