[Upgrading, Modifying and Unlocking] spit85:
Sometimes another version of SP Flash Tool works, and another not. But my advise is; use the SP Flash Tool that also works the last time u used.

But never use the Firmware->Upgrade button, because there more phones that got brick after that. If you have the right scatter file, use the download button, then it will download it to the phone. Download doesn't mean that you download it to your computer, there for you use the read back function.

It can be that some versions of SP Flash Tool get a error message, that you must use the Firmware->Upgrade button instead, but don't do that.

And also don't use the memory test in SP Flash Tool, because there also phones that got brick after that. Or sometimes all the blocks on the phone got deleted.

---------- Post added at 11:39 PM ---------- Previous post was at 10:55 PM ----------

And another advise: read back your rom to your pc, so you always can download it back to your phone.

Open SP Flash Tool and open your scatter file, then click on the read back tab.

Now click on the "Add" button, then double click on the new file. Now choose where you want to save the rom, but don't change the name. If you want to change the name, it must always start with rom_heryourfilename.

Now you must choose type HEX; by the start address must set 0x0000000000000000. Now you must choose the length, in how far your rom must backed up.

Open your scatter file and look what until which hex you want to read back your rom. I don't know how your scatter file sees out, but the start adress from a new partition is the end address to backup your rom. So lets say in your scatter file you want to backup to the ANDROID partition, and the next partition is the CASE partition, with a value of 0x227e8000 (is just a sample value), you will put the value from the CASE partition as length in SP Flash Tool.

If you put that value in and click on "OK" you have setup that SP Flash Tools will read back your rom to the Android Partition. If you also want to backup the next partition, the CASE partition in this sample, you must put the hex value from the next partition in the length box.

But if the partition USERDATA is at the end, you don't have to backup that, because that will also copy all your downloaded apps. There for you have CWM or TWRP, or Titanium backup, to backup the user data.

If you have don that, power down your phone. Click on "Read back", then plug in your phone to your computer, and it will backup your rom to the computer. It may take up to 30 minutes until it is ready.

Now open "MTK Droid Root & TOOLS", go to the tab "root, backup, recovery". The latest version you can download here

Then click on "To process file ROM_from FlashTool" and it will unpack your rom to the backups folder inside the folder where you started MTKdroidTools. It will even make a scatter file. If it will also make a scatter file with PMT at the end of the file name, you can choose that scatter file in the future to download your rom back to the phone.

Leave the scatter file in the backups folder from MTK Droid Tools, and choose it in SP Flash Tool, so that everything will be chosen to download it back to your phone. If some of the check boxes isn't check, check it on and choose the right file. That is because MTK Droid Tools, have made a patched boot image, and the normal boot image. If you download the patched version to your phone you have always direct root rights in ADB shell. The patched recovery image is a version from CWM, but that is is older version from CWM, so you can choose another recover image to download back to the phone.

If you have everything chosen, click on Download in SP Flash Tool, not on "Firmware->Upgrade"