[Android General] charlestek:
MT65XX Win 10 Drivers, SemiBrick Preloader Instructions

I just found this site which seems to be a russian translation. Has a good description of some of the items Tzul enumerated in his boot process write up today.

And contains supposedly Win 10 Mt65XX drivers:

http://laurentiumihet.ro/technology/sp-flash-tool-mediatek-mt65xx-drivers-download-and-installation-guide-including-bricked-devices/

http://laurentiumihet.ro/technology/windows-10-mtk-vcom-usb-drivers-for-32-64-bit-drivers-installation-tutorial/

Excerpts:

WHAT IF OUR MT65XX DEVICE HAS GOT THE WRONG PRELOADER? HERE WE GO…

For the record, I will consider the MT65xx device as being recoverable through this procedure in that case in which there still is an interaction with the Device Manager on the Windows PC when you connect the MT65xx device without the battery pack if possible, via USB and the blue light turns ON (if the notification LED exists).

THIS PROCEDURE APPLES TO YOUR MT65XX DEVICE IF:

A. The MT65xx device is not starting at all.

B. The MT65xx device is starting/restarting (vibrates) but the screen remains black.

C. The SP Flash Tool reports an error that prevents the successful download of the firmware files to your MT65xx device because your “PRELOADER” firmware component that you are trying to download is bad or corrupt.

If this “PRELOADER” firmware component was previously downloaded to the Flash Memory of the MT65xx device but it was incorrect or corrupt, the MT65xx device will use a special, low-layer interface, to communicate with the PC. This interface is non-removable and is the only interface that allow us to change the “PRELOADER” firmware component if intended.

The SP Flash Tool can also handle this low-layer interface. However, the SP Flash Tool can only use this low-layer download interface to replace the “PRELOADER” component of the firmware. Afterwards, with the correct “PRELOADER” firmware component, the MT65xx device will instantly reinitialize its related Integrated Circuits, switching to the normal “MediaTek PreLoader” download interface that will take in the rest of the firmware components sent by SP Flash Tool. Your device will NOT remain dead if you follow this trough.

This low-layer interface is there to save the device no-matter how worst it got bricked. You only need the right driver to start the recovery process of the Flash Memory. The proper driver for this low-layer download interface is also located in “MT65xx Drivers” folder. The MT65xx device will keep the low-layer download interface alive for about one minute. During this time you need to update or install the driver.

In this case, initially, the PC could show an “Unknown Device” in Device Manager window, then it might automatically install a driver from Windows Update, most likely THE WRONG DRIVER. If this is the case, you must then manually force-update the driver for the low-layer download interface of the MT65xx device.

In my case, Microsoft Windows 7 64 bit wrongly installed the low-layer download interface of my MT65xx device as a “Alcatel Single RNDIS Interface” under “Network adapters“. The device is sometimes with an exclamation mark and it disconnects regularly being unable to start. That was because my PC was set to automatically search for drivers at Windows Update for all the new connected devices, so I expected this to happen. A simple method to avoid this scenario is to disconnect the PC from the internet before connecting the MT65xx device to that PC via USB. Otherwise you might have a hard time finding the device in the Device Manager window. depending upon the exact model of your MT65xx device and the operating system on your PC.