How to Install Stock ROM on LYF Flame 4 (LYF LS-4003) (Firmware File)

Today I will guide you on How to Install Stock ROM on LYF Flame 4 (LYF LS-4003). Here are the list of Stock ROM for LYF Flame 4 (LYF LS-4003). This is an update for the LYF Flame 4 with model no LYF LS-4003. Now you can Install the Stock ROM using the SP Flash Tool on your LYF Flame 4 Smartphone. Download the ROM which we have listed with the latest update. You can also update your Lyf Flame smartphone anytime, also you can install the listed earlier build to revert back to old version also.

In case if you have bricked your device, then you can bring back the phone (Unbrick) using the stock firmware anytime. Also if you feel your LYF Flame 4 lag or has any issue, then flash the stock firmware from the list below and save from situation. Stock Firmware doesn’t void a warranty on your LYF Flame 4. In the lists we have Android Lollipop Update but once we see the new update we will update the post. Also if LYF company release Android 6.0 Marshmallow we will update here. To install the Stock Firmware on LYF Flame 4, Please follow the guide and download the ROM and SpFlashtool on your computer. This guide is for How to Install Stock ROM on LYF Flame 4 smartphone.

How to Install Stock ROM on LYF Flame 4 (LYF LS-4003)

Advantage of Stock Firmware :

  • To Unbrick your phone
  • To Fix the Bootloop problem
  • Upgrade and Downgrade your phone
  • To Unroot or Fix Bugs on your phone
  • To fix the lag or stutter
  • Unbrick your phone
  • To revert back to stock to gain your warranty.

READ THIS CAUTION : So before jump into the manual upgradation setup, please make sure you have a good amount juice with at least 80% Charge. If not please charge the phone. Backup your phone in case if you need it later. If you brick the device we are not responsible. Do it at your own risk. Remember this guide is to update Stock ROM for LYF Flame 4 

List of Stock ROM for LYF Flame 4  (LYF LS-4003)

Download File Descroption
LYF LS-4003
Marshmallow ROM Not yet Released and we are not sure whether the company will release Android 6.0 Marshmallow update for Lyf Flame 4


  • Download the Factory Download/UpgradeDownload : Download and Extract it
  • Charge your phone to at least 70%
  • Back up your device just in case if you need it later
  • You need either Laptop or PC

How to Update or Downgrade the STOCK ROM on LYF Flame 4  :

  1. First of all, do all the PREREQUISITE STEPS and Now Open the Extracted Factory Download/UpgradeDownload Folder
  2. In the folder, you will find 4 files which are shown in the screenshot below Factory-DownloadUpgradeDownload
  3. Extract the UPGRADE DOWNLOAD or FACTORY DOWNLOAD to start flashing the ROM, here i will guideon using the UPGRADEDOWNLOAD Zip file.
  4. So now, Extract the Zip file UPGRADEDOWNLOAD and Open the file .exe named UPGRADEDOWNLOAD
  5. Now Tap on the load packet option (Check Screenshot) to load the firmware. So browse the file with extension .pac from the ROM File you downloaded load packet
  6. After loading .pac, Connect your LYF smartphone to PC/Laptop and Click the start button to start upgrading. start-button
  7. Wait until the process completes.
  8. During the flashing, your phone will restart automatically.
  9. That’s it ! You have updated the Stock ROM on LYF Flame 4


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