Disclaimer: It's not my fault if you brick your phone or tablet. This how-to is probably more useful for people that have already bricked their device.
If your MTK (MediaTek) based Android device has the ability to get into Meta Mode, I doubt you can brick it. Meta Mode will allow you to reflash even with a broken preloader/bootloader.
Note: No audio, my voice sucks. I'm sorry I didn't get very good shots of my thumb on the VolUp button as I plugged in USB.
Installing VCOM Drivers
Download (push) Whole ROM
Download (push) CWM Recovery
(no ADB needed)