Has multi port option which can flash many similar devices at same time.
OK now lets go to how to use WiseLinkTool
Download WiseLinkTool v188.8.131.52 or WiseLinkTool v184.108.40.206
Download and install MTK USB VCOM drivers from here or here or here
Extract, install and launch by opening WiseLinkTool.exe inside installation folder
Click on Open RegCode File Navigate and select ZZZZZZZZZZZZZZZZZZZZZZZZ.key from extract folder
Now Click on the button with ... to load scatter file (Scatter files can either be in .txt or .sca format)
Navigate and select the scatter file of the device you want to flash/unbrick or upgrade.
Tick the required partition to flash (Tick all for complete flash or upgrade)
Click Download Button and connect phone to PC
When process is complete,the phone will reboot or start charging depending on the option selected After Downloaded Tab.
Note that first boot after flash
Congrats! you have successfully flashed your device
If you have null or invalid imei number after flash, restore with mtk engineering mode app, chamelephon, SN Write Tool or mtk droid tools
If device bootloops after flash process, do a factory reset from recovery.
If screen of device divides/displays funny colours when boot up, use another ROM or Firmware