Mt6261 Usb Driver -

Even with the driver installed, the MT6261 only appears as a COM port for 2–5 seconds when first connected in download mode. To catch it:

Troubleshooting catch mode: If the flash tool stays at “Searching” (0%), the driver is not capturing the preloader window. Use USBDeview to monitor the COM port appear/disappear. Some users need to short test points on the PCB to force BROM mode. mt6261 usb driver

That indicates a short circuit or power surge. Do not connect that device again. Test the USB port with a known-good device. The MT6261's internal PMU (Power Management Unit) may be fried. Even with the driver installed, the MT6261 only