Last Updated: May 9, 2026
Use the official Tecno Spark 40C KM4k firmware to resolve software glitches such as bootloops, FRP locks, and a stuck logo. This page provides the necessary files, tools, and clear instructions to restore your device to a working state.
Device: Tecno Spark 40C KM4k | Chipset: MediaTek MT6768 Helio P65 | 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.
Tecno Spark 40C KM4k Firmware (Flash File) Drivers, Tools & Guide
The Tecno Spark 40C KM4k is a device I see in the workshop fairly often. It usually arrives with an FRP lock, bootloop issues, or stuck on the Tecno logo. This guide puts everything you need, files, tools, and steps, in one place.
I always recommend extracting the firmware to a simple folder path like C:Firmware. SP Flash Tool can sometimes struggle to find the scatter file if the path contains spaces or special characters. It is a small detail, but it saves a lot of hassle.
Your Tecno Spark 40C KM4k 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 40C KM4k
You can factory reset the Tecno Spark 40C KM4k without a computer by powering off the device completely, then holding 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 40C KM4k 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 40C KM4k FRP Bypass
The fastest way to bypass FRP on the Tecno Spark 40C KM4k 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.
Why Do We Need Tecno Spark 40C KM4k Firmware?
The Tecno Spark 40C KM4k runs on a MediaTek chipset, and SP Flash Tool is the standard method for firmware recovery on these devices. Here is what flashing the stock firmware can help with:
- Unlock your device if it has been locked or disabled.
- Update to the latest Android version supported by your phone.
- Fix startup loops, lagging, and freezing on your KM4k Spark 40C.
- Resolve OTA update failures and battery drain issues.
- Restore the original Tecno stock ROM to keep your warranty valid.
- Recover your device when it only boots into recovery mode.
- 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.
Choosing the Right Firmware Version
Before you begin flashing, take a moment to confirm you have the right file. Flashing the wrong firmware is a mistake that is difficult to recover from:
- Identify Your Device Model: Go to About Phone and confirm your model is Tecno Spark 40C KM4k. Check the full model string, not just the name.
- Verify the Build Number: Look for the identifier “KM4k” in your device build details.
- Confirm the Chipset: According to Tecno specifications, the Spark 40C KM4k runs on MediaTek MT6768 Helio P65.
- Match the Firmware Version: Check the version and regional details against what is listed in the download table above.
- Verify in Recovery Mode: If you are not sure about the chipset or build number, boot into recovery mode, it displays this information clearly and is the most reliable way to confirm before you flash.
Firmware Details for Tecno Spark 40C KM4k
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Tecno Spark 40C KM4k |
| Firmware Version | 15.1.1.106SP30, 15.1.1.106SP01(OP001PF001AZ) |
| File Size | 5.4 GB |
| Android Version | Android 15, HIOS 15.1 |
| Platform | MediaTek MT6768 Helio P65 |
| 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?
This is the most common question I receive, so I created a simple guide. Find your situation in the table and go straight to the right file:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | 15.1.1.106SP01(OP001PF001AZ), download this one. It is the latest Tecno Spark 40C KM4k 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 15.1.1.106SP01(OP001PF001AZ) first, then follow the IMEI repair guide. Do not skip the reflash. |
| 15.1.1.106SP01(OP001PF001AZ) 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 | 15.1.1.106SP01(OP001PF001AZ), 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 40C KM4k Firmware
Download the official stock firmware for your Tecno Spark 40C KM4k below. The latest available version is 15.1.1.106SP01(OP001PF001AZ). 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_40C_KM4K_MT6768_15.1.1.106SP30_OP001PF001AZ_030725.zip Size: 5.4 GB | Download Link | Download Link2 |
| File Name: Tecno_Spark_40C_KM4K_MT6768_15.1.1.106SP30_OP001PF001AZ_030725.zip Size: 5.4 GB | Download Link | Download Link2 |
| File Name: KM4k-15.1.1.106SP01(OP001PF001AZ) Size: N/A | 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.
- Your model number is a variant of KM4k with a different letter suffix. Check About Phone carefully, one letter difference can cause a failed or broken flash.
- Your chipset differs from MediaTek MT6768 Helio P65. Confirm in recovery mode before proceeding.
- You downloaded the file from a source other than this page.
- The file size differs significantly from the sizes listed in the table above, a size mismatch usually means a partial download, which will fail mid-flash.
Prerequisites for Tecno Spark 40C KM4k Firmware
Do not skip this section. Most failed Tecno flashes happen because people rush the preparation steps. The VCOM driver installation is essential for the Tecno Spark 40C KM4k 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:
How to Install Firmware on Tecno Spark 40C KM4k
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 and Extract:
- Download the correct firmware package from the links above.
- Extract the ZIP to a simple folder path, avoid paths with spaces or special characters, as some flash tools have trouble with them.
- Install the Listed Drivers:
- Confirm all drivers listed above are installed and that your PC has been restarted since installation. Skipping the restart is a common reason drivers do not work correctly.
- 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:
- Click the “Download” button to begin.
- Do not disconnect, move the cable, or touch the device until the process is fully complete. Disconnecting mid-flash is how devices get bricked.
- Wait and Reboot:
- Once flashing finishes successfully, disconnect the device.
- Power on your device. The first boot will take longer than usual, give it up to 8 minutes.
What to Expect After Flashing Tecno Spark 40C KM4k Firmware
I receive many comments from people who think something went wrong when it actually did not. Here is what is completely normal after a successful Tecno Spark 40C KM4k firmware flash:
- 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.
- First boot takes 3 to 8 minutes, do not force-reboot the device. The operating system is setting itself up from scratch. Interrupting this is how devices end up in bootloops.
- The phone will feel warm during first boot, this is normal. It settles after a few minutes once the initial app setup is complete.
- All your apps are gone, this is expected. Reinstall them from the Play Store. If you had a Google account backup active, it will offer to restore your apps automatically during setup.
- 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.
- Be careful when re-adding your Google account, if you did not remove it before flashing, you may see an FRP prompt. Add it fresh during the setup wizard, not afterwards through Settings.
- 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.
- Stuck in a bootloop after first boot? Enter recovery mode and do a factory reset from there, see the hard reset guide above. This can happen occasionally and does not mean the firmware is wrong, it is usually a conflict with leftover data from the old install.
- HiOS / XOS Pre-installed Apps: After flashing Tecno Spark 40C KM4k firmware, you will see pre-installed apps from Tecno. These can be disabled in Settings › Apps if you do not want them, but do not force-remove them with ADB, as some are tied to system services on your device.
Missing IMEI or Corrupt Baseband on Tecno Spark 40C KM4k 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
Common Issues When Flashing Tecno Spark 40C KM4k
- Tecno Spark 40C KM4k Not Recognized by SP Flash Tool:
- In most cases this is a driver issue, not a cable issue. Reinstall the VCOM drivers for the KM4k, 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.
Frequently Asked Questions
Q1: Will flashing the Tecno Spark 40C KM4k firmware erase my data?
A: Yes, flashing this firmware with SP Flash Tool restores your device to factory state, including Android 15, HIOS 15.1 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.
Q2: Is this firmware compatible with other Tecno models?
A: No. This firmware is built specifically for the Tecno Spark 40C KM4k running on the MediaTek MT6768 Helio P65 chipset. Even the Spark 40C with a different letter suffix (for example, a different variant of KM4k) can have a completely different chipset inside. Flashing the wrong firmware can leave your phone in a state that is very difficult to recover from. Always check your exact model number in Settings › About Phone.
Q3: Can I downgrade from 15.1.1.106SP01(OP001PF001AZ) to an older firmware version?
A: It is technically possible on some MediaTek builds, but I do not recommend it. Downgrading can cause security issues and app compatibility problems on Android 15, HIOS 15.1. If 15.1.1.106SP01(OP001PF001AZ) is causing you trouble, leave a comment below, there is usually a better fix than rolling back.
Q4: What should I do if I encounter an FRP lock after flashing?
A: Use our free Android apps launcher. FRP lock on the Tecno Spark 40C KM4k activates when a Google account was still signed in before flashing. This is also why I always recommend signing out of your Google account before flashing, it avoids this issue entirely.
Q5: Are custom ROM options available for the Tecno Spark 40C KM4k?
A: This guide covers official Tecno stock firmware only. Custom ROM availability for the Tecno Spark 40C KM4k depends on whether the MediaTek MT6768 Helio P65 chipset has open-source kernel support. Check our Custom ROMs page or the XDA Developers forum for device-specific custom ROM threads.
Q6: My Tecno Spark 40C KM4k 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, MTK devices are more reliable on USB 2.0 ports. Disable your antivirus temporarily. If none of that works, leave a comment below with the exact error message and I will help you from there.
Q7: How do I enter recovery mode on my Tecno Spark 40C KM4k?
A: Power the device off completely, then hold Volume Up + Power at the same time until the recovery menu appears. The recovery menu will display the build number for your Tecno Spark 40C KM4k which you can use to verify your firmware version before flashing.
Q8: My IMEI shows “unknown” after flashing the Tecno Spark 40C KM4k. 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. The important thing: do not insert a SIM card until the IMEI is restored.
Q9: How long does it take to flash Tecno Spark 40C KM4k firmware?
A: The actual flashing process usually takes between 3 and 10 minutes depending on the firmware size and your USB connection speed. The first boot after flashing takes longer, anywhere from 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.
Final Thoughts on Tecno Spark 40C KM4k Firmware
That covers everything you need to safely flash the official Tecno Spark 40C KM4k firmware (15.1.1.106SP01(OP001PF001AZ)) using SP Flash Tool and get your device working again. If you followed each step, your phone should now be running on a clean build.
If something did not go as expected, a specific error, a step that is not working for your setup, leave a comment below with as much detail as you can: the exact error message, which step you are on, and what you have already tried. I read every comment and will help you work through it.
If this guide helped you, consider sharing it, it is the best way to help someone else who is dealing with the same problem.
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.
