MT6261 (MediaTek MT6261) is a low-cost, feature-phone-class MCU with integrated cellular modem and peripheral interfaces. This write-up covers the USB driver stack typically used with MT6261-based devices: enumeration, USB classes supported, control transfers, data endpoints, power and wake handling, firmware/bootloader interactions, common host-side tools, and troubleshooting.
For Windows 10/11 64-bit, look for files named cdc-acm.inf or drivers located inside a Win10 or x64 folder. mt6261 usb driver
The MT6261 USB driver is a software component that allows communication between a Windows operating system and a MediaTek MT6261 processor. MT6261 (MediaTek MT6261) is a low-cost
If Device Manager shows no reaction when plugging in the device: USB classes supported
You must permanently disable driver signing for legacy drivers using bcdedit (admin command prompt):