Connect your phone to your PC make sure your phone is USB debugging is Enable
Run the SP Flash Tool as an Administrator ( by right clicking on it and selecting run as administrator ).
From the SP Flash Tools, click scatter loading and then select the scatter file of your device you created earlier.
Now click read back tab on the SP Flash Tool as seen in the picture below
Then click add twice. The !st one is for the boot image (boot.img), and the 2nd one is for the recovery image (recovery.img) we are going to create. These can be used as stock backups and also for various other uses such as creating ROM dumps and CWM custom recovery.
Double click the 1st add line. A new window will appear asking you to save the file. Select any suitable location of your choice to save the file and name the file as boot.img. This is where your stock boot image will be saved.
N.B. The next step is VERY IMPORTANT. You have to enter the PROPER AND CORRECT Hex value for the start address and length for the boot.img. If you don’t then all your efforts will be in vain.
HOW TO GET THE HEX VALUES
The hex values for the start address is gotten from the scatter file while that of the length is gotten from the MTK Droid Tool.
To know the hex value to enter in the start address, open the scatter file with the notepad++. Scroll down to where you have the boot.img and recovery.img blocks listed. Copy EXACTLY the hex value written in the linear start address of the boot.img block on the notepad++. Enter this hex value into the start address. In mine, the hex value is 0x2380000
To know the hex value to enter in the length, open MTK Droid Tool as an administrator, and wait for some few seconds for it to detect your device and load its info (ensure USB debugging is enabled on your device). Click on blocks map. Then go to the boot.img line. Length is equal to the size, therefore enter the entry of the size on the boot.img block of the MTK Droid tool. In my case it is 0000600000> However, we are only interested in the real/significant numerals/digits i.e 600000. We are not interested in the first four zeros. Therefore replace the first four zeros with 0x. This gives us 0x600000 which is the hex value we are going to enter into the SP Flash Tool as our boot.img length hex value.
Now we MUST ensure that the hex value of the start address and length have the same number of digits/ numerals/characters. In my case the hex value of length is shorter by one character compared to the start address, (0x600000 and 0x2380000 i.e 9 and 8 characters respectively) therefore we will add a zero to the value of the length. This gives us the following result 0x2380000 and 0x6000000 ( both now have 9 characters each).
You are done with boot.img
Next is Recovery image click here