Here is Stock Firmware for CUBOT C9W 4.0 Inch MTK6572W Dual Core Smartphone:
2.Download tool: Flash tool
Pls note, before you flash the phone you need to install the drivers on your pc.
2.A new windows will be on you pc screen as below. click the”scatter loading ”
Loading the txt file as below pic shows:
Step 3: Click the “Download ”and turn off your Smartphone .Then connect your C11 with your PC through the USB cable .