Re-installing official ROM for Lenovo S890

I must admit, fixing this phone is a pain in the arse a little bit, especially after I followed the instructions as close as 1, 2, 3. First, it was about installing the drivers. Then, it turned out, the version of the app in used matters too otherwise the flashing will keep failing.

Use : 
  1. SP_Flash_Tool_v3.1332.0.187.rar
  2. Lenovo_S890_ALL_Driver
  3. S890_S511_LANG_EN

Installing ROM using SP_Flash_Tool

Problem 1 : Drivers installation
Firstly Download MTK USB VCOM Drivers for MTK6577
Now open Device Manager (in Control Panel)
Right click on PC name and then click on Add legacy hardware
Now in Add Hardware Wizard click on Next
Click Install the Hardware that i manually select from a list (Advanced)
Click Show All Devices
Click Next 
Click Have a Disk
Browse, Now select the drivers that have been downloaded (inf file)
Now click on Next on the wizard to install the drivers
When promoted for security issue just click on install any anyway to finish the driver installation.
After clicking on Finish, Restart the PC 

Problem 2: S_FT_FORMAT_FAIL (4010)
Make sure to use SP_Flash_Tool_v3.1332.0.187. Other version may not work (most of them didn't).
Open the original ROM scatter file using notepad++.
Delete (__NODL_) at __NODL_PMT 0x700000 line and leave it to PMT 0x700000. 
Save it as a new file.
Open SP Flash Tool and open the edited scatter file.
Format using "Auto Format Flash" and choose "format whole flash except Bootloader"
Wait until green circle appeared 
Re-install the ROM

Problem 3: Invalid IMEI, no calls, no SMS, no data (after successfully installed ROM)
Root with KingoRoot (
Install Mobileuncletools from PlayStore
Choose Engineer mode
Choose Engineer Mode (MTK)
Choose Connectivity TAB
Choose CDS Information
Choose Radio Information
Choose phone 1
Edit "AT+" to become "AT +EGMR=1,7,"123456789012345" 
Press "send AT Command"
Press Back
Edit "AT+" to become "AT +EGMR=1,7,"123456789012345" 
Press "send AT Command"
Exit and reboot. 
Note: Video

Note: If you have other Lenovo phone, you can search in here for official and custom made ROM