Ensure you have the MTK (MediaTek) USB Drivers and Qualcomm HS-USB QDLoader 9008 drivers installed. Without these, v3.77 won't see your phone.
Here is a comprehensive breakdown of what MRT Key version 3.77 is, its verified features, its current operational status, and how to safely use it today. What is MRT Key?
Support for generic Qualcomm flashing and FRP removal. Conclusion mrt key ver 377 verified
Utilizes primary firehose programmers to communicate directly with Qualcomm chipsets before the primary bootloader initializes.
This implies a driver conflict. Open Device Manager, connect the phone in the specific flashing mode (e.g., holding Volume Up + Down), and check if it shows an error icon. Reinstall the LibUSB filter driver if needed. Ensure you have the MTK (MediaTek) USB Drivers
Could you share a bit more context? For example:
Version 3.77 brought several improvements aimed at increasing the success rate of device servicing and covering newer models that were previously unsupported. 1. Enhanced MTK Service Operations What is MRT Key
Strong capabilities for Y-series and V-series device unlocking.
: Temporarily or permanently unlocks bootloaders on supported MediaTek and Qualcomm devices to allow custom partition flashing.
Launch the MRT.exe file (the 3.77 version).