Tutorial : Star Note II N9770 MT6577 Dual Core Rooting Tutorial.

Download this: CLICK

Edit: UNTESTED but for WIN7 Users these drivers could be needed???: CLICK

Unpack it.

Start the flashing tool.

Click on "Scatter-loading" to load the MT6577_Android_scatter_emmc.txtfile, the flashing tool should looks exactly like this:

Click on "Download", you'll get a warning message:

Continue anyway.

Your phone is OFF.

Remove the battery.

Connect the phone via USB-datacable to your pc.

Insert the battery, it SHOULD trigger the flashing process. If this is the first time you are doing it, you should be asked to install a driver. The missing driver is located in the

SP_Flash_Tool_v3.1222.00 / new usb driver folder. After the driver is installed, you may have to start the flashing process again.

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Edit: For Windows 7 users:

Start c/windows/system32/hddwiz.exe (as admin)


Click next

Manually select hardware

List all devices

Select the driver (for example usb2ser_Win764.inf)

from the List select "MediaTek Preloader USB VCOM Port"

(I don't have Win 7 running, so I can't verify this) 
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Flashing the bootimage should only take a few of seconds, on success the flash tool looks like this:

Your phone should now be rooted, if you find a "Superuser" App on your phone, everything went well.

Good luck and remember,

YOU ARE DOING THIS AT YOU OWN RISK!!!!

Edit: Lost your IMEIs after a factory reset? Not a problem, check this out: CLICK

Different CPU, different rooting method, never mind, the IMEI part works the same :-)