Refer here http://www.satechhelp.co.za/rom-download for the ROM or firware download
Then download the SP Flash Tool
Install the MTK VCOM drivers if you had not.
Lauch the SP Tool
Dowload tab
Load the scatter
Click
Then download the SP Flash Tool
Install the MTK VCOM drivers if you had not.
Lauch the SP Tool
Dowload tab
Load the scatter
Click