Asus Pegasus 4S Flashing Tutorial with SP Flash Tool

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Asus Pegasus 4S Flashing Tutorial with SP Flash Tool

If you are trying to flash your Asus Pegasus 4S device then I would like to suggest you to try using Smartphone flash tool (aka SP Flash Tool). SP flash tool is great flashing tool for Android. You can use this tool to flash almost any MTK (Mediatak IC) based smartphone. Try flashing any custom ROMs, stock ROMs on your Asus Pegasus 4S Android smartphone.

SP flash tool is best firmware flashing tool available online whether it is custom ROM or stock ROM. Using SP Flash Tool, you can flash Asus Pegasus 4S Android device (but make sure to check if it is based on Mediatek IC). Flash any custom or stock ROM over Asus Pegasus 4S Android device. Also, do make sure that you have installed Asus Pegasus 4S USB drivers properly on your PC before flashing any firmware file.

Find your Asus Pegasus 4S USB drivers by using search below:

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Pre-requisites before flashing Asus Pegasus 4S:

  • Battery should be charged up to 70%
  • Make sure you have Asus Pegasus 4S's USB cord available
  • Download and install SP Flash tool in PC
  • Since, SP flash tool we need to install MediaTek USB drivers
  • Download Asus Pegasus 4S firmware file (Scatter file + files to be flashed)
  • Last but not the least, you need to take your device backup (for safety reasons)
  • Once you have all the things ready above, follow the rest of flashing tutorial

Steps to flashing Asus Pegasus 4S using SP flash tool

Follow the steps below to flash Asus Pegasus 4S with SP flash tool:

  • Install SP FLASH TOOL in PC - Step 1
    Download & install spflashtool.exe:

    Download SP flash tool, spflashtool.exe

  • Download flash recovery image Step 2
    Download flash recovery image:

    FLashing is not easy, it take time and patience. To flash Asus Pegasus 4S, make sure you have flash recovery image ready for your device model.

  • Asus Pegasus 4S flashing tutorial with SP Flash Tool - Step 3
    Load scatter file:

    Click Scatter Loading (Load Scatter file of Asus Pegasus 4S).

  • 4
    Uncheck all boxes :

    Now, you should uncheck all boxes from SP flash tool

  • 5
    Load Recovery Image:

    Tick-box, Go to / click RECOVERY box from list and load recovery image of your Asus Pegasus 4S device (load image from the separate window -->open)

  • 6
    Recovery box must be CHECKED:

    Recovery box is checked before you connect your Asus Pegasus 4S, in recovery image location (uncheck all other boxes)

  • 7
    Turn off and connect Asus Pegasus 4S with PC:

    Turn off Asus Pegasus 4S and connect it with PC

  • 8
    Click Download button:

    After connecting your device with PC, just click download button on top

  • 9
    Step #9, click yes:

    If it ask click “yes”

  • 10

    Congrats! You have successfully flashed your Asus Pegasus 4S device

Disclaimer: Please follow the flashing tutorials on your own risk.


If SP flash tool prompts green circle, you are done. Asus Pegasus 4S have been flashed using SP flash tool.

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