Here is a detailed method with images and direct download links for flashing stock rom for Qmobile Noir A300.

Step 1: Download and install Android USB Drivers on your computer. In case Android USB Drivers are already installed on your Computer then skip this step.

Step 2: Power Off your Android Smartphone and remove the Battery (if it is removable).

Step 3: Download the Stock Rom or Custom Rom that you want to Flash on your Android Smartphone and extract it on your Computer.

Step 4: Download and Extract Smart Phone Flash Tool on Your Computer. After Extracting you will be able to see the following files:

Step 5: Now Open Flash_tool.exe.

Step 6: Once Smart Phone Flash Tool is launched, Click on the Download Tab.

Step 7: In the Download Tab, now click on the scatter-loading button.

Step 8: Now, Locate the Scatter File (you will find the scatter file in the Stock rom folder).

Step 9: Now, Click on the Download Button to begin the Flashing Process.

Step 10: Now, Connect your Smartphone to the Computer using USB Cable (without battery- if it is removable). After connecting the device to the computer Press Volume Down or Volume Up key, so that your computer easily detect your smartphone.

Step 11: Once Flashing is completed, a Green Ring will appear.

Step 12: Close the Smart Phone Flash Tool on your computer and disconnect your Android Smartphone from the computer.

Congratulations, You have successfully installed stock rom for Qmobile Noir A300