If you need to flash a stock ROM (firmware flash file), custom ROM, custom recovery, or rooting file on any of the Lenovo mobile devices, then you can use the SP Flash Tool (Smartphone Flash Tool), provided that your smartphone comes with a MediaTek system chip inside.
Some manufacturers like Samsung have their own dedicated flashing tools. Samsung uses the Odin flashing tool, for example. On the other hand, other manufacturers share flashing tools. The SP Flash Tool works for all Lenovo mobile devices, as well as for smartphones from other manufacturers that have MediaTek chips as well. It doesn’t matter what version; the latest will be compatible with more devices, but all manufacturers share the same versions. For more on SP Flash Tool versions, you can see the Smartphone Flash Tool’s download page.
The SP Flash Tool was actually developed and released by MediaTek Inc., hence why it’s always working for those particular devices with MediaTek chips.
You can refer to the list of devices with MediaTek system chips from Wikipedia if you’re unsure, or use a search engine such as Google to research it further yourself.
Download Lenovo Flash Tool
1. Start off by downloading and install the Android CDC driver on the Windows computer. (You don’t have to install the driver a second time if you’ve already got it on the computer.)
2. Download the ROM that you want to flash onto the computer and extract the file by right-clicking on it > choosing extract from the menu. (You can also follow the same steps given below for flashing a custom ROM that’s made for your device if you like.)
3. Download and extract the Smartphone Flash Tool file onto your computer.
4. Double-click on the SP Flash Tool application from within the extracted folder.
5. You’ll now have the Smartphone Flash Tool interface open on your computer. Click on the “Download” tab from its menu.
6. Click on the “Choose” button from the Scatter-loading section. Navigate to where your ROM file is on your hard drive, click on it, and then it will upload to the flash tool.
7. Click on the “Download” button when you want to start the ROM flashing.
8. Pick up the smartphone, making sure it is powered off first, and connect it to the computer with the USB cable, remembering to press one of the Volume buttons once it’s connected so the computer can detect the mobile device.
The ROM will then get flashed to the smartphone. You know the flashing is finished when you get a big green tick at the end.
The Smartphone Flash Tool requires you to upload the scatter file, something that’s unique to stock and custom ROMs for MediaTek devices. All MediaTek stock ROMs will have the scatter file inside the official firmware package. And if the custom ROM is the real deal, it should be inside that file that you may have gotten from a source such as XDA-Developers as well.
While the firmware is officially flashed, you might be without your IMEI number until you flash it again, which can be done now by using the SN Write Tool. MediaTek Inc. also makes the SN Write Tool, as a way for people who flash firmware files manually to get the IMEU back on the device easily.