Infinix Smart 20 X6840 Firmware

Last Updated: August 4, 2026

Find everything you need to flash your Infinix Smart 20 X6840 here. We provide the official firmware files, required tools, drivers, and complete step-by-step instructions. This guide covers FRP bypass solutions, troubleshooting steps, and IMEI repair procedures to restore your device to working condition.

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Infinix Smart 20 X6840 Firmware (Flash File) Drivers, Tools & Guide

The Infinix Smart 20 X6840 frequently requires firmware restoration to resolve bootloops, FRP locks, or logo hangs. This guide consolidates all necessary resources including stock firmware, flashing tools, and detailed procedures. The MediaTek MT6768 Helio G81 Ultimate chipset requires SP Flash Tool and VCOM drivers for proper flashing operations.

Before beginning the flashing process, extract firmware to a straightforward folder path such as C:FirmwareX6840. SP Flash Tool may struggle to locate the scatter file if the folder path contains spaces or special characters. This simple step prevents unnecessary troubleshooting during the setup phase.

Stock firmware for the Infinix Smart 20 X6840 comes in a compressed ZIP format. Use WinRAR or 7-Zip to extract the contents. Verify the presence of the scatter file in the extracted folder before proceeding with flashing.

This process returns the device to its original factory settings, which permanently deletes all personal data. This clean installation resolves persistent issues including bootloops, forgotten screen locks, Google account verification errors, battery drain problems, and system crashes.

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Bypass Google Lock on Infinix Smart 20 X6840

The quickest method to bypass Factory Reset Protection (FRP) on the Infinix Smart 20 X6840 involves using a free Android apps launcher during setup wizard completion. After flashing or factory reset, if a Google account lock appears, our free Android apps launcher provides immediate access to settings. Always remove Google accounts before flashing to prevent this issue.

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Hard Reset Infinix Smart 20 X6840

To perform a hard reset without a computer, power off the device completely. Then simultaneously hold Volume Up and Power buttons until the recovery menu appears. Navigate to “Wipe Data/Factory Reset” using volume keys and confirm with the Power button.

A hard reset clears all data and restores the Infinix Smart 20 X6840 to its original factory state. This resolves most software issues including performance slowdowns, app crashes, forgotten screen locks, and bootloops. If problems persist after factory reset, proceed with full firmware flashing using SP Flash Tool as detailed in subsequent sections.

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How to Pick the Correct Infinix Smart 20 X6840 Firmware

Incorrect firmware selection is a frequent cause of flashing failures. Before downloading, confirm your exact device specifications:

1. Identify Your Device Model: Navigate to About Phone and verify the model is Infinix Smart 20 X6840. Check the complete model string for accuracy.
2. Verify the Build Number: Confirm the identifier “X6840” appears in your device build details.
3. Confirm the Chipset: The Smart 20 X6840 utilizes MediaTek MT6768 Helio G81 Ultimate as per official specifications.
4. Match the Firmware Version: Compare version and regional information against the download table specifications.
5. Verify in Recovery Mode: For definitive confirmation, boot into recovery mode which clearly displays chipset and build information.

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When Should You Flash Infinix Smart 20 X6840?

SP Flash Tool is the standard method for firmware recovery on MediaTek devices like the Infinix Smart 20 X6840. Stock firmware flashing addresses multiple device issues:

• Update to the latest supported Android version
• Resolve startup loops, lag, and freezing issues
li>Clear forgotten screen locks without original credentials
• Unlock disabled devices
• Restore original stock ROM for warranty compliance
• Remove persistent malware surviving factory reset
• Recover from “Download DA FAIL” errors and Secure Boot authentication issues

Learn more about stock ROMs and the effectiveness of flashing.

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Firmware Details for Infinix Smart 20 X6840

Here are the official firmware specifications for the Infinix Smart 20 X6840:

Firmware Information	Details
Device Model	Infinix Smart 20 X6840
Firmware Version	16.1.0.140SP09
File Size	6.9 GB
Android Version	Android 16, XOS 16
Platform	MediaTek MT6768 Helio G81 Ultimate
Release Date	Released 2026, March
Region	Global, Africa and Asia
File Type	ZIP (Includes Scatter File [MT6xxx_Android_scatter.txt], preloader.bin, boot.img, system.img, recovery.img, lk.bin, logo.bin, nvram.img, and more)

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Which Firmware Version Should I Download?

Based on common scenarios, this guide helps select the appropriate firmware version:

Your Situation	What I Recommend
Phone is completely dead or stuck on logo	16.1.0.140SP09, download this one. It is the latest Infinix Smart 20 X6840 firmware available.
FRP / Google account lock only	See the FRP bypass guide above, you likely do not need the full firmware for this.
Phone slow after a recent OTA update	Try the next older version, sometimes the latest OTA introduces new bugs and an older build runs better.
IMEI missing after a previous flash	Re-flash 16.1.0.140SP09 first, then follow the IMEI repair guide. Do not skip the reflash.
16.1.0.140SP09 failed with a flash error	Try the next older version instead and double-check your scatter file selection before assuming the firmware is the problem.
Restoring to factory / warranty repair	16.1.0.140SP09, clean state, fresh start.

My general approach with MTK devices: always try the latest version first. I have seen people spend a lot of time trying older builds when the newest one would have worked fine. Only move to an older version if the latest fails more than once, and make sure it is a driver issue you are solving, not a firmware issue.

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Download Infinix Smart 20 X6840 Firmware

Download the official stock firmware for your Infinix Smart 20 X6840 below. The latest available version is 16.1.0.140SP09. After downloading, verify the file size matches the table above, a size mismatch usually means a partial or corrupt download, and flashing a corrupt file can cause more problems than it solves.

Software Details	Download Link	Members Link
File Name: Infinix_Smart_20_X6840_MT6768_16.1.0.140SP09_OP001PF001AZ_Open_Market_010126.zip Size: 6.9 GB	Download Link	Download Link2

Only download firmware that is fully compatible with your exact device model. See the firmware selection guide above if you are not sure.

Important: The Infinix Smart 20 X6840 (X6840) should not be confused with other Smart 20 variants that may have different chipsets or regional firmware. Even devices in the same Smart 20 line can use completely different processors. Always verify your exact model code “X6840” in Settings > About Phone before downloading any firmware from this page.

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What You Need Before Flashing Infinix Smart 20 X6840

Preparation is critical for successful flashing. Most failed Infinix flashes result from skipping preparation steps. The VCOM driver installation is essential for the Infinix Smart 20 X6840 and other MediaTek devices. Windows may show the device in Device Manager and SP Flash Tool will still not detect it if the correct VCOM driver is not installed.

1. Back Up IMEI Numbers: Dial *#06# and write down both IMEI numbers now. You will need these if you need to restore your IMEI after flashing.
2. Remove Google Accounts: Sign out of all Google accounts to prevent FRP lock after flashing.
3. Back Up Your Data: Back up everything, photos, contacts, WhatsApp chats, important files. Flashing wipes the device completely.
4. Charge Your Device: At least 50% battery. A device that powers off during a flash is very difficult to recover.
5. USB Cable & PC: Use a proper data USB cable, not a charge-only cable, and a Windows computer with available USB ports.
6. Install Required Drivers:
   • VCOM Drivers
   • Infinix USB Drivers

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Install Stock Firmware on Infinix Smart 20 X6840

We are using SP Flash Tool for this process. For older devices, I recommend trying SP Flash Tool v5.1924 first. Newer versions require a DA (Download Agent) file that older firmware packages do not include, causing “Auth” errors. If SP Flash Tool requests an auth file and you do not have one, switch to MTK Client, it handles Secure Boot automatically. Download SP Flash Tool for Windows or SP Flash Tool for Linux and follow the steps below. The complete SP Flash Tool guide provides additional details if needed.

1. Prepare the Flash Files:
   • Obtain the firmware package matching your device from the download section.
   • Unzip the file to a folder on your desktop. Avoid folder names with non-English characters or spaces, the flash tool may not read them correctly.
2. Confirm Driver Setup:
   • The drivers listed in prerequisites must be installed and working before connecting the phone. If uncertain, reinstall them and restart your computer.
3. Load the Firmware File:
   • Click “Scatter-loading” and navigate to the extracted firmware folder to select the “scatter.txt” file.
4. Connect Your Device:
   • Power off your phone completely, not sleep mode, fully off.
   • Connect to your PC via USB cable. The flash tool will detect it automatically.
5. Start Flashing:
   • Click “Download” to begin the firmware write process.
   • Keep hands off the phone and cable until completion. Moving or disconnecting during flashing is the most common cause of bricked devices.
6. Wait and Reboot:
   • Upon seeing the success message, disconnect the USB cable.
   • Hold the power button to boot the phone. Allow 5 to 8 minutes for the first startup, this is normal.

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Fix Common Infinix Smart 20 X6840 Firmware Errors

1. Infinix Smart 20 X6840 Not Recognized by SP Flash Tool:
   • This is typically a driver issue, not a cable problem. Reinstall the VCOM drivers for the X6840, restart your PC, and retry before making other changes.
   • If unresolved, switch to a USB 2.0 port, USB 3.0 ports frequently cause detection issues with MediaTek devices.
   • Still not working? Temporarily disable your antivirus as it may block VCOM driver loading without error messages.
2. Boot Loop After Flashing:
   • Enter recovery mode and perform a factory reset. Most post-flash bootloops on MediaTek stem from conflicts with old cached data, recovery wipe usually resolves this without reflashing.
3. Wrong Scatter File / Firmware Mismatch:
   • If SP Flash Tool errors at download start, verify the scatter file first. Scatter file and device build mismatch is a leading cause of flash errors.
4. “Download DA FAIL” Error:
   • This error commonly occurs. It almost always indicates improper VCOM driver installation. Reinstall drivers, restart your PC, and retry. If still failing, try SP Flash Tool v5.1924, older devices respond better to this version.
5. Error 8038 (BROM Error):strong>
   • The device is not entering BROM mode correctly. Power it off completely and remove the battery for 30 seconds if possible. Reconnect and retry. Some MediaTek devices require holding Volume Down while plugging in the USB cable to enter BROM mode.
6. Auth File / Secure Boot Error in Newer SP Flash Tool:
   • Newer SP Flash Tool versions require a DA (Download Agent) authentication file for devices with Secure Boot enabled. If unavailable, use MTK Client instead, it handles Secure Boot automatically and is simpler to use.

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Post-Flash Behavior on Infinix Smart 20 X6840

These behaviors are completely normal after a successful firmware flash:

• How to know the flash was successful: SP Flash Tool displays a green circle or checkmark upon completion. This confirms successful flashing.
• First boot takes 3 to 8 minutes, do not force-reboot. The operating system is setting up from scratch. Interrupting this causes bootloops.
• Storage shows near-full capacity since all apps and files are erased. System partition size typically ranges from 4 to 8 GB depending on firmware version.
• Battery percentage may appear inaccurate for the first day. Battery statistics calibrate during normal use. Charge fully once without interruption for stable readings.
• Fingerprint and face unlock data are erased. Re-register biometric data in security settings after flashing.
• Be careful when re-adding Google accounts, if not removed before flashing, FRP prompt may appear. Add fresh during setup wizard, not through Settings.
• All apps are removed, reinstall from Play Store. If Google account backup was active, it will offer automatic app restoration during setup.

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Missing IMEI or Corrupt Baseband on Infinix Smart 20 X6840 After Flashing?

A missing or unknown IMEI frequently occurs after MediaTek flashing. The NVRAM partition storing IMEI and calibration data may not survive flashing intact. While alarming, this is fixable:

1. Check drivers first: Install the Mediatek CDC Driver if not already present, IMEI repair tools cannot detect the device without it. This step is frequently overlooked.
2. Use SN Write Tool or Maui Meta: SN Write Tool is the first option, it works on most MTK devices. Maui Meta serves as an alternative if SN Write fails. Learn more about using SN Write Tool here.
3. Run the repair:
   • Connect your device to the computer.
   • Enter original IMEI numbers for both SIM slots, the numbers recorded before flashing.
   • Click “Start” and allow completion without interrupting the connection.
4. Verify after reboot: Upon completion, reboot and dial *#06#. IMEI numbers should be restored. If still showing null, repeat the process, first attempts sometimes do not complete correctly.

Video Guide: How to repair IMEI

Credits: https://www.youtube.com/@mhgsmclinic

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Frequently Asked Questions

Q1: Will flashing void my warranty?
A: Flashing official stock firmware generally does not void your warranty since you are restoring the device to its factory-intended state. However, some manufacturers may flag that the bootloader was unlocked or that the flash counter increased. Check your specific warranty terms with Infinix support if you are concerned.

Q2: Can I go back to an older firmware version?
A: It is technically possible on some MediaTek builds, but downgrading can cause security issues and app compatibility problems. If the latest version is causing trouble, leave a comment below, there is usually a better fix than rolling back.

Q3: My IMEI shows “unknown” after flashing. Is my phone permanently damaged?
A: No, it looks alarming, but it is fixable. Follow the IMEI repair guide in the troubleshooting section above. For MediaTek devices, SN Write Tool or Maui Meta will handle the repair. Do not insert a SIM card until the IMEI is restored.

Q4: Will flashing erase my data?
A: Yes, flashing with SP Flash Tool restores the device to factory state, including Android 16, XOS 16 default settings. All apps, photos, contacts, and accounts will be removed. Back up everything you need before you start. There is no way to recover data once the flash is complete.

Q5: Can I flash this firmware if my phone does not turn on at all?
A: Yes, in most cases. As long as the phone responds to a USB connection (even with a black screen), the flash tool can detect it. If the battery is completely drained, charge it for at least 15 minutes first.

Q6: What should I do if I encounter an FRP lock after flashing?
A: Use our free Android apps launcher. FRP lock activates when a Google account was still signed in before flashing. This is why signing out of your Google account before flashing avoids this issue entirely.

Q7: Do I need an internet connection during flashing?
A: No. The flashing process is entirely offline, it happens between your PC and the phone via the USB cable. You do not need internet at any point during the flash itself. You will need internet later to set up the phone and download your apps.

Q8: How do I enter recovery mode?
A: Power the device off completely, then hold Volume Up + Power at the same time until the recovery menu appears. The recovery menu displays the build number which you can use to verify your firmware version before flashing.

People Also Ask About Infinix Smart 20 X6840

What is the latest firmware version for Infinix Smart 20 X6840?
The latest available Infinix Smart 20 X6840 firmware on this page is version 16.1.0.140SP09. This page has 1 firmware build available for download. Check the firmware details table above for file sizes and Android versions.

Can flashing firmware fix a bricked Infinix Smart 20 X6840?
Yes. If your Infinix Smart 20 X6840 is stuck on the logo, in a bootloop, or will not turn on, flashing the stock firmware with SP Flash Tool can restore it to working condition. This is the standard repair method used by service centers for Infinix devices.

What chipset does the Infinix Smart 20 X6840 use?
The Infinix Smart 20 X6840 uses the MediaTek MT6768 Helio G81 Ultimate chipset, a MediaTek processor. This means you need SP Flash Tool and VCOM/MTK USB drivers to flash firmware. MediaTek devices use scatter-file-based flashing, which is different from Qualcomm (QFIL) or Samsung (Odin) methods.

Will flashing firmware on Infinix Smart 20 X6840 erase my data?
Yes. Flashing stock firmware on the Infinix Smart 20 X6840 with SP Flash Tool performs a full factory reset. All apps, photos, contacts, and accounts will be removed. Back up everything important before you start. There is no way to recover data after flashing.

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Summary

This completes the flashing process for the Infinix Smart 20 X6840. With 16.1.0.140SP09 installed, your device should boot cleanly and be ready for setup.

If you encounter issues not covered here, or if any step does not work as expected, provide details in the comments. Include error codes or screenshots when available.

Bookmark this page if you regularly work on Infinix devices. It is updated when new firmware versions become available.

Browse all Infinix firmware downloads for more devices.

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Disclaimer: Flashing stock firmware is performed at your own risk. Follow the instructions on this page carefully. I cannot be held responsible for any damage to your device, but I will always try to help if something goes wrong.