Last Updated: June 11, 2026
This guide provides the stock firmware, drivers, and step-by-step instructions to restore the Tecno Spark 40 KM5S to its factory state. It covers the process for fixing bootloops, FRP locks, and software corruption on the Tecno Spark 40 KM5S.
Device: Tecno Spark 40 KM5S | Chipset: MediaTek MT6768 Helio G90T | Flash Tool: SP Flash Tool
Android: Android 15, HIOS 15.1 | 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)
⚠ Warning: Flashing erases all data. Back up first.
Device: Tecno Spark 40 KM5S (MediaTek MT6768 Helio G90T)
Flash Tool: SP Flash Tool
Latest Build: 15.1.1.109
Firmware Files: 1 available
What You Need: Windows PC, USB data cable, SP Flash Tool, USB drivers
Time Required: 10-20 minutes (plus 3-8 min first boot)
Tecno Spark 40 KM5S Firmware (Flash File) Drivers, Tools & Guide
I have handled various Tecno models, and the KM5S comes in with standard issues like bootloops or a stuck logo. This guide covers all of it. I have put everything you need in one place: the firmware, the tools, and the exact process I use myself.
I recommend extracting the firmware to a simple folder path, something like C:FirmwareKM5S. SP Flash Tool can sometimes have trouble locating the scatter file if the folder path contains spaces or special characters. It is a small detail, but it saves a few frustrating minutes wondering why the tool is not loading the file.
Only one firmware build is currently available for the Tecno Spark 40 KM5S. This is the stock ROM you should use for recovery, unbricking, or FRP bypass. The stock firmware ships with Android 15, HIOS 15.1, which determines the default apps, security features, and interface you will see after flashing. The Tecno Spark 40 KM5S is a relatively recent device (released 2025), so you should expect active firmware updates and good driver support on modern Windows systems.
The Tecno Spark 40 KM5S was released in 2025. This page is maintained with the latest available firmware builds as they become available. This firmware was sourced directly from verified repositories and checked for integrity before being listed on this page.
Your Tecno Spark 40 KM5S firmware comes as a compressed ZIP file. Download and extract it using WinRAR or 7-Zip. Once extracted, open the folder and confirm it contains the scatter file before proceeding.
Keep in mind that flashing stock firmware erases all data, which is intentional, as it resolves software issues including FRP lock, app problems, slow performance, forgotten pattern locks, a dead or logo-stuck device, Wi-Fi and Bluetooth issues, battery drain, and soft brick situations.
Hard Reset Tecno Spark 40 KM5S
Power off the device completely, then hold Volume Up and Power at the same time until the recovery menu appears. Use the volume keys to navigate to “Wipe Data/Factory Reset” and confirm with the Power button.
A hard reset erases all data and restores Tecno Spark 40 KM5S to its original factory state. This fixes most software problems, slow performance, app crashes, forgotten screen locks, and bootloops. If the issue persists after a factory reset, a full firmware flash using SP Flash Tool is covered in the following sections.
Tecno Spark 40 KM5S FRP Bypass
The fastest way to bypass FRP on Tecno Spark 40 KM5S is to use a free Android apps launcher that lets you access settings during the setup wizard. After flashing or performing a factory reset you may see a Google account lock (FRP). Our free Android apps launcher is the fastest way to get past it. This is also why I always recommend removing your Google account before flashing, it avoids this problem entirely.
What Tecno Spark 40 KM5S Firmware Fixes
The Tecno Spark 40 KM5S uses a MediaTek chipset, and SP Flash Tool is the standard method for firmware recovery on MTK devices. Here is what flashing the stock firmware can help with:
- Fix startup loops, lagging, and freezing on your device.
- Resolve OTA update failures and battery drain issues.
- Restore the original Tecno stock ROM to keep your warranty valid.
- Remove persistent malware or adware that survives a factory reset.
- Fix Wi-Fi, Bluetooth, or mobile data connectivity that stopped working after an update.
- Update to the latest Android version supported by your phone.
- Recover from “Download DA FAIL” errors and Secure Boot authentication issues specific to the MediaTek chipset in your device.
Learn more about stock ROMs and why flashing works.
Verify Your Tecno Spark 40 KM5S Model Before Downloading
Downloading the wrong firmware can brick the device, so confirming the model and chipset is a critical step before you start.
- Verify Your Exact Model: In Settings, look for the model code “KM5S”. Some Tecno phones share the same marketing name but have different internal hardware.
- Confirm the Processor: This build targets the MediaTek MT6768 Helio G90T chipset. You can check your chipset via recovery mode or a hardware info app.
- Review the Version Number: The firmware version in the download table should be close to or newer than what your device is currently running.
- Use Recovery Mode as a Safety Check: Before flashing, boot into recovery to see the current build number and chipset printed on screen. This is the most trustworthy check.
- Verify the Region: Some firmware builds are region-specific. Confirm the download matches your device region or is listed as global.
Firmware Details for Tecno Spark 40 KM5S
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Tecno Spark 40 KM5S |
| Firmware Version | 15.1.1.109 |
| File Size | 4.7 GB |
| Android Version | Android 15, HIOS 15.1 |
| Platform | MediaTek MT6768 Helio G90T |
| Release Date | Released 2025, August |
| 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) |
Which Firmware Version Should I Download?
Select the correct firmware version based on your specific issue from the comparison table below.
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | 15.1.1.109, download this one. It is the latest Tecno Spark 40 KM5S 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 15.1.1.109 first, then follow the IMEI repair guide. Do not skip the reflash. |
| 15.1.1.109 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 | 15.1.1.109, 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.
Download Tecno Spark 40 KM5S Firmware
Download the official stock firmware for your Tecno Spark 40 KM5S below. The latest available version is 15.1.1.109. 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: Tecno_Spark_40_KM5S_MT6768_15.1.1.109_GTTG001PF001LC_010725.zip Size: 4.7 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 Tecno Spark 40 KM5S (KM5S) should not be confused with other Spark 40 variants that may have different chipsets or regional firmware. Even devices in the same Spark 40 line can use completely different processors. Always verify your exact model code “KM5S” in Settings > About Phone before downloading any firmware from this page.
- The model code on your phone must match KM5S exactly. Even a single letter variant (like adding or dropping an “i” or “s”) can mean a different chipset inside.
- Your chipset should be MediaTek MT6768 Helio G90T. Recovery mode shows this information if you are not sure.
- Do not mix firmware from other download sites with the files on this page.
- If the downloaded file is much smaller than what is listed in the table above, re-download it, partial files will fail.
What You Need Before Flashing Tecno Spark 40 KM5S
Do not skip this section. Most failed Tecno flashes come from rushing through the preparation steps. The VCOM driver installation is essential for the Tecno Spark 40 KM5S 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.
- 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.
- Remove Google Accounts: Sign out of all Google accounts to prevent FRP lock after flashing.
- Back Up Your Data: Back up everything, photos, contacts, WhatsApp chats, important files. Flashing wipes the device completely.
- Charge Your Device: At least 50% battery. A device that powers off during a flash is very difficult to recover.
- USB Cable & PC: Use a proper data USB cable, not a charge-only cable, and a Windows computer with available USB ports.
- Install Required Drivers:
Flashing Tecno Spark 40 KM5S Firmware With SP Flash Tool
We are using SP Flash Tool for this. For older devices, I recommend trying SP Flash Tool v5.1924 first. The newer versions of SP Flash Tool require a DA (Download Agent) file that older firmware packages do not include, and that is what causes the “Auth” errors you may have seen. If SP Flash Tool keeps asking for 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 is also available if you need more detail.
- Download the Firmware Package:
- Use the download links in the table above to get the correct firmware file for your device.
- Extract the archive with WinRAR or 7-Zip. Use a short folder path like
D:flashto avoid issues with some tools.
- Check Drivers:
- All drivers from the prerequisites must be installed before connecting your device. Restart your computer after installing them.
- Load the Firmware File:
- Click on the “Scatter-loading” button. Navigate to the folder where you extracted the firmware and select the “scatter.txt” file.
- 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.
- Start Flashing:
- Press “Download” to begin writing the firmware to your device.
- Do not unplug the phone, close the flash tool, or interact with the device until the process is 100% complete.
- Wait and Reboot:
- After the tool confirms the flash is complete, safely disconnect your phone.
- Press the power button to start your device. The initial boot is slow, wait up to 8 minutes before assuming there is a problem.
What Is Normal After a Tecno Spark 40 KM5S Flash?
Several behaviors are normal immediately after completing a successful flash on the Tecno Spark 40 KM5S.
- How to know the flash was successful: SP Flash Tool will show a green circle or checkmark when done. If you see that, the flash completed successfully.
- Fingerprint and face unlock data are erased during the flash. You will need to re-register your fingerprints and face data from scratch in the security settings.
- Dial *#06# immediately after setup to check your IMEI. Do this before you insert a SIM card. If it shows “unknown” or “null”, follow the IMEI repair guide below before doing anything else.
- Storage will show almost full capacity available since all your apps and files are gone. The system partition size varies by firmware version but is typically 4 to 8 GB on most devices.
- Battery percentage may seem inaccurate for the first day. The battery statistics are calibrated during normal use. Charge the phone fully once without interruption and the readings will stabilize.
- Wi-Fi, Bluetooth, and mobile data should all work right after setup. If mobile data is not connecting, go to Settings, SIM and Network, and re-enter your APN manually, the flash sometimes clears carrier APN settings.
- Notification sounds and ringtones will be back to factory defaults. Any custom tones you had set before will need to be re-downloaded and re-assigned in Settings.
Tecno Spark 40 KM5S Flashing Problems and Fixes
- Tecno Spark 40 KM5S Not Recognized by SP Flash Tool:
- In most cases this is a driver issue, not a cable issue. Reinstall the VCOM drivers for the KM5S, restart your PC, and try again before changing anything else.
- If that does not work, switch to a USB 2.0 port, USB 3.0 ports can cause detection issues with MediaTek devices more often than people expect.
- Still not working? Temporarily disable your antivirus. It can block the VCOM driver from loading without giving you any error message.
- Boot Loop After Flashing:
- Enter recovery mode and perform a factory reset from there. Most post-flash bootloops on MediaTek are caused by conflicts with old cached data, a wipe from recovery usually fixes this without needing to reflash.
- Wrong Scatter File / Firmware Mismatch:
- If SP Flash Tool throws an error as soon as you try to start the download, check your scatter file first. A mismatch between the scatter file and your device build is one of the most common causes of flash errors.
- “Download DA FAIL” Error:
- This error comes up regularly. It almost always means the VCOM driver is not properly installed. Reinstall it, restart your PC, and try again. If that still does not work, try switching to SP Flash Tool v5.1924, older devices sometimes respond better to the older version.
- Error 8038 (BROM Error):
- The device is not entering BROM mode correctly. Power it off completely and, if possible, remove the battery for 30 seconds. Reconnect and try again. Some MediaTek devices require you to hold Volume Down while plugging in the USB cable to enter BROM mode.
- Auth File / Secure Boot Error in Newer SP Flash Tool:
- Newer versions of SP Flash Tool require a DA (Download Agent) authentication file for devices with Secure Boot enabled. If you do not have that file, switch to MTK Client instead, it handles Secure Boot automatically and is the simpler solution.
Missing IMEI or Corrupt Baseband on Tecno Spark 40 KM5S After Flashing?
A missing or unknown IMEI is one of the most common things I see after a MediaTek flash. It happens because the NVRAM partition, which stores your IMEI and calibration data, sometimes does not survive the flash intact. It looks alarming, but it is fixable. Here is what to do:
- Check your drivers first: Install the Mediatek CDC Driver if you have not already, without it, the IMEI repair tools will not detect your device. This is the step most people miss.
- Use SN Write Tool or Maui Meta: SN Write Tool is the first option I try, it is straightforward and works on most MTK devices. Maui Meta is the alternative if SN Write does not connect. You can learn more about using SN Write Tool here.
- Run the repair:
- Connect your device to the computer.
- Enter the original IMEI numbers for both SIM slots, these are the numbers you wrote down before flashing.
- Click “Start” and let it complete without interrupting the connection.
- Verify after reboot: Once done, reboot your phone and dial *#06#. Your IMEI numbers should be back. If they are still showing null, run the process again, sometimes the first attempt does not complete correctly.
Video Guide: How to repair IMEI
Credits: https://www.youtube.com/@mhgsmclinic
Tecno Spark 40 KM5S Flashing FAQ
Q1: Is it safe to flash during a power outage risk?
A: It is best to avoid flashing during unstable power conditions. If your PC shuts down during the flash, it can corrupt the write and leave the phone in an unbootable state. If you are in an area with unreliable power, use a laptop with a fully charged battery instead of a desktop.
Q2: What if the flash fails halfway through?
A: Do not panic and do not disconnect the phone. Close SP Flash Tool, restart it, and try the flash again from the beginning. In most cases, a failed flash just means the process needs to be repeated. The device is usually still detectable by the flash tool even after a failed attempt.
Q3: 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 Tecno support if you are concerned.
Q4: 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.
Q5: 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.
Q6: How long does the flashing process take?
A: The actual flash usually takes between 3 and 10 minutes depending on the firmware size and USB connection speed. The first boot after flashing takes another 3 to 8 minutes. Do not interrupt the device during either stage. If the progress bar in SP Flash Tool appears stuck, give it a few more minutes before assuming something went wrong.
Q7: Can I use a Mac or Linux computer for this?
A: The tools and drivers referenced on this page are Windows-only. If you are on Mac or Linux, your best option is to use a Windows virtual machine, or borrow a Windows PC for the 10 minutes it takes to complete the flash.
Q8: My device is not detected by SP Flash Tool. What should I do?
A: Start with the drivers, reinstall the VCOM drivers, restart your PC, then try again. Switch to a USB 2.0 port if you are on USB 3.0. Disable your antivirus temporarily. If none of that works, leave a comment with the exact error message.
People Also Ask About Tecno Spark 40 KM5S
Will flashing firmware on Tecno Spark 40 KM5S erase my data?
Yes. Flashing stock firmware on the Tecno Spark 40 KM5S 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.
What is the latest firmware version for Tecno Spark 40 KM5S?
The latest available Tecno Spark 40 KM5S firmware on this page is version 15.1.1.109. This page has 1 firmware build available for download. Check the firmware details table above for file sizes and Android versions.
What chipset does the Tecno Spark 40 KM5S use?
The Tecno Spark 40 KM5S uses the MediaTek MT6768 Helio G90T 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.
How do I check my Tecno Spark 40 KM5S model number before flashing?
Go to Settings > About Phone on your Tecno Spark 40 KM5S and look for the model number “KM5S”. You can also confirm by entering recovery mode (Volume Up + Power while powered off) which displays the build number and model code. Always match this exactly with the firmware filename before flashing.
Summary
Your Tecno Spark 40 KM5S should now be running 15.1.1.109 on a clean build. If the first boot takes a while, do not worry, that is completely normal after a fresh flash.
Ran into something unexpected? Leave a comment and describe what happened. Include which step you were on and what error you saw. I will get back to you.
Consider sharing this guide with anyone else who has a Tecno device that needs fixing.
Browse all Tecno firmware downloads for more devices.
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.
