Last Updated: August 20, 2026
When your Infinix Note 12 Pro 5G X671B shows a bootloop, gets stuck on the logo, or locks out after a reset, this guide provides complete recovery instructions using official firmware, proper flash tools, and clear steps.
Device: Infinix Note 12 Pro 5G X671B | Chipset: MediaTek Dimensity 810 (MT6833) | Flash Tool: SP Flash Tool
Android: Android 12, XOS 10.6 | 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: Infinix Note 12 Pro 5G X671B (MediaTek Dimensity 810 (MT6833))
Flash Tool: SP Flash Tool
Latest Build: V1098
Firmware Files: 10 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)
Infinix Note 12 Pro 5G X671B Firmware (Flash File) Drivers, Tools & Guide
The Infinix Note 12 Pro 5G X671B frequently arrives in my workshop with common software issues like FRP locks, bootloop failures, or persistent logo screens. This guide consolidates all necessary resources: the firmware files, required tools, and step-by-step procedures I use for repairs.
Before beginning, extract firmware to a straightforward folder path such as C:FirmwareX671B. SP Flash Tool may struggle to locate the scatter file if the path contains spaces or special characters. This small precaution prevents frustrating delays during the flashing process.
Released in 2022, the Infinix Note 12 Pro 5G X671B may require manual driver installation on newer Windows systems. The stock firmware includes Android 12 with XOS 10.6, which determines default applications and security features. Powered by MediaTek Dimensity 810 (MT6833), this device uses SP Flash Tool with VCOM/MTK drivers for flashing. All necessary prerequisites are listed below.
Firmware file integrity was verified across two independent sources to confirm authenticity. With 10 firmware versions archived for the Infinix Note 12 Pro 5G X671B, this page covers multiple Android builds and security patch levels.
Infinix Note 12 Pro 5G X671B firmware comes as a compressed ZIP file. Download and extract it using WinRAR or 7-Zip. After extraction, open the folder and verify the scatter file presence before proceeding.
Flashing completely overwrites the software partition. All data, applications, and accounts will be removed. This full wipe resolves deep software issues including FRP locks, boot failures, Wi-Fi problems, and app crashes.
Infinix Note 12 Pro 5G X671B Google Account Bypass After Reset
To bypass FRP on Infinix Note 12 Pro 5G X671B, use a free Android apps launcher that provides settings access during setup. After flashing or factory reset, Google account lock (FRP) may appear. Our free Android apps launcher offers the quickest solution. This is why removing your Google account before flashing prevents this issue entirely.
Infinix Note 12 Pro 5G X671B Hard Reset Guide
To factory reset Infinix Note 12 Pro 5G X671B without a computer, power off the device completely. Hold Volume Up and Power simultaneously until the recovery menu appears. Use volume keys to navigate to “Wipe Data/Factory Reset” and confirm with Power button.
A hard reset erases all data and restores Infinix Note 12 Pro 5G X671B to factory state. This resolves most software problems including slow performance, app crashes, forgotten screen locks, and bootloops. If issues persist after reset, full firmware flashing using SP Flash Tool is detailed in following sections.
Which Firmware Version Does Your Infinix Note 12 Pro 5G X671B Need?
The most frequent error people make is flashing firmware for incorrect variants. Before downloading, verify your exact device identity:
- Find Your Model Code: Go to Settings, then About Phone. The code should be “X671B”. If different, do not use this firmware.
- Cross-Check the Chipset: The Note 12 Pro 5G X671B uses MediaTek Dimensity 810 (MT6833). If your phone shows a different chipset in recovery mode, stop and find correct firmware.
- Note Your Current Build: Write down the build number from About Phone. This helps compare versions and decide whether to upgrade or reflash same version.
- Boot Into Recovery: Recovery mode (Volume Up + Power while off) is safest way to verify model info before flashing.
- Check Download Size: After downloading, verify file size matches the table on this page. Corrupt or partial downloads cause flash failures.
When Should You Flash Infinix Note 12 Pro 5G X671B?
The Infinix Note 12 Pro 5G X671B uses a MediaTek chipset, with SP Flash Tool as the standard recovery method. Flashing stock firmware helps with:
- Fix Wi-Fi, Bluetooth, or mobile data connectivity issues after updates
- Unlock devices that have been locked or disabled
- Resolve touchscreen problems from corrupted system builds
- Restore accidentally removed or corrupted system apps
- Clear forgotten screen locks, PIN, or pattern without credentials
- Repair phones that shut down randomly or restart in loops
- Resolve “Download DA FAIL” errors and Secure Boot issues specific to MediaTek Dimensity 810
Learn more about stock ROMs and why flashing works.
Firmware Details for Infinix Note 12 Pro 5G X671B
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Note 12 Pro 5G X671B |
| Firmware Version | V313, V994, V970, V944, V881, V653, V1098, V643 |
| File Size | 4 GB to 4.82 GB |
| Android Version | Android 12, XOS 10.6 |
| Platform | MediaTek Dimensity 810 (MT6833) |
| Release Date | Released 2022, July 15 |
| 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 here is a simple guide. Match your situation to the table and select the appropriate file:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | V1098, download this one. It is the latest Infinix Note 12 Pro 5G X671B 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 V994, sometimes the latest OTA introduces new bugs and an older build runs better. |
| IMEI missing after a previous flash | Re-flash V1098 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V1098 failed with a flash error | Try V994 instead and double-check your scatter file selection before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | V1098, 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 Infinix Note 12 Pro 5G X671B Firmware
Download the official stock firmware for your Infinix Note 12 Pro 5G X671B below. The latest available version is V1098. 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_Note_12_Pro_5G_X671B_MT6833_EU_V313_230712.zip Size: 4 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-230314V994.zip Size: 4.48 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-221220V970.zip Size: 4.51 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-221103V944.zip Size: 4.5 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-220826V881.zip Size: 4.42 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-220527V653.zip Size: 4.22 GB | Download Link | Download Link2 |
| File Name: X671B-H331EF-S-GL-220826V881.zip Size: 4.4 GB | Download Link | Download Link2 |
| File Name: Infinix_X671B-H331EF-S-GL-220527V653.zip Size: 4.22 GB | Download Link | Download Link2 |
| File Name: Infinix-Note-12-Pro-5G-X671B-H331EF-S-GL-230614V1098-Flash-File.zip Size: 4.54 GB | Download Link | Download Link2 |
| File Name: Infinix-Note-12-Pro-5G-X671B-H331EF-T-GL-240326V643-Flash-File.zip Size: 4.82 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 Note 12 Pro 5G X671B (X671B) should not be confused with other Note 12 Pro 5G variants that may have different chipsets or regional firmware. Even devices in the same Note 12 Pro 5G line can use completely different processors. Always verify your exact model code “X671B” in Settings > About Phone before downloading any firmware from this page.
- Go to Settings and verify your model is exactly X671B. Phones with similar names can have completely different hardware.
- The chipset in your device should be MediaTek Dimensity 810 (MT6833). If it is different, this firmware will not work.
- Always download directly from the table on this page to ensure you have the correct build.
- Check the file size after downloading, a mismatch with the listed size means a partial or corrupt download.
Infinix Note 12 Pro 5G X671B Flash Setup Checklist
Do not skip this section. Most failed Infinix flashes occur due to rushed preparation steps. VCOM driver installation is essential for the Infinix Note 12 Pro 5G X671B and other MediaTek devices. Windows may show the device in Device Manager and SP Flash Tool will still not detect it without the correct VCOM driver.
- Write Down Your IMEI: Open your phone dialer and type *#06#. Take a photo of the screen showing both IMEI numbers. You may need these later to fix your IMEI if it gets wiped during the flash.
- Sign Out of Google: Open Settings, go to Accounts, and remove every Google account from the device. If you skip this, Google will lock the phone after flashing and you will need to do an FRP bypass.
- Save Your Files: Copy everything important to a PC or cloud storage. After flashing, the phone will be completely empty, no apps, no photos, no messages.
- Battery Check: Charge to at least 50%. If the phone dies during flashing, you could end up with a device that will not turn on at all.
- Get the Right Cable: You need a USB data cable, the kind that can transfer files, not just charge. Plug it into a USB 2.0 port on a Windows PC for the most reliable connection.
- Set Up Drivers:
Install Stock Firmware on Infinix Note 12 Pro 5G X671B
We use 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 you do not have, 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 Unpack:
- Select the correct firmware version from the downloads above and save it to your PC.
- Extract the ZIP file. If the extracted folder contains another ZIP inside, extract that one too. You should have the actual firmware files, not another archive.
- Driver Check:
- Confirm you have installed the required drivers. Missing drivers are the most common reason flash tools cannot detect your phone. Reboot your PC after installation.
- Load the Firmware File:
- Click “Scatter-loading”. Navigate to the extracted firmware folder 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:
- Begin the flash by clicking “Download”.
- Leave everything untouched until completion. Even bumping the USB cable can interrupt the write and cause a failed flash.
- Wait and Reboot:
- The flash is complete when the tool shows a success indicator. Disconnect your phone.
- Turn the phone on. Do not worry if it sits on the boot logo for several minutes, the system is rebuilding itself from scratch.
Common Issues When Flashing Infinix Note 12 Pro 5G X671B
- Infinix Note 12 Pro 5G X671B Not Recognized by SP Flash Tool:
- This is typically a driver issue, not a cable problem. Reinstall the VCOM drivers for X671B, restart your PC, and try again before changing anything else.
- If that fails, switch to a USB 2.0 port, USB 3.0 ports can cause detection issues with MediaTek devices more often than expected.
- Still not working? Temporarily disable your antivirus. It can block the VCOM driver from loading without showing any error message.
- Boot Loop After Flashing:
- Enter recovery mode and perform a factory reset from there. Most post-flash bootloops on MediaTek stem from conflicts with old cached data, a wipe from recovery usually resolves this without needing to reflash.
- Wrong Scatter File / Firmware Mismatch:
- If SP Flash Tool throws an error when starting the download, check your scatter file first. A mismatch between the scatter file and your device build is a frequent cause of flash errors.
- “Download DA FAIL” Error:
- This error appears regularly. It almost always indicates 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 this 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 holding Volume Down while plugging in the USB cable to enter BROM mode.
- 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 you do not have that file, switch to MTK Client instead, it handles Secure Boot automatically and is the simpler solution.
Post-Flash Behavior on Infinix Note 12 Pro 5G X671B
Here is what is completely normal after a successful flash:
- How to know the flash was successful: SP Flash Tool will display a green circle or checkmark when done. If you see that, the flash completed successfully.
- 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.
- 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.
- The phone may ask for language and region again, this is normal after a flash. You are starting from a clean state, so the setup wizard runs just like when the phone was brand new.
- 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.
- 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.
- 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.
Missing IMEI or Corrupt Baseband on Infinix Note 12 Pro 5G X671B After Flashing?
A missing or unknown IMEI is common after MediaTek flashes. This happens because the NVRAM partition, which stores 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, 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 Questions About Flashing Infinix Note 12 Pro 5G X671B
Q1: 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.
Q2: 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.
Q3: Will flashing erase my data?
A: Yes, flashing with SP Flash Tool restores the device to factory state, including Android 12, XOS 10.6 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.
Q4: 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.
Q5: 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.
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: Is this firmware compatible with other Infinix models?
A: No. This firmware is built specifically for the Infinix Note 12 Pro 5G X671B running on the MediaTek Dimensity 810 (MT6833) chipset. Even variants of the Note 12 Pro 5G with a different letter suffix 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.
Q8: 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.
People Also Ask About Infinix Note 12 Pro 5G X671B
What chipset does the Infinix Note 12 Pro 5G X671B use?
The Infinix Note 12 Pro 5G X671B uses the MediaTek Dimensity 810 (MT6833) 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 Infinix Note 12 Pro 5G X671B model number before flashing?
Go to Settings > About Phone on your Infinix Note 12 Pro 5G X671B and look for the model number “X671B”. 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.
Can flashing firmware fix a bricked Infinix Note 12 Pro 5G X671B?
Yes. If your Infinix Note 12 Pro 5G X671B 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 is the latest firmware version for Infinix Note 12 Pro 5G X671B?
The latest available Infinix Note 12 Pro 5G X671B firmware on this page is version V1098. This page has 10 firmware builds available for download. Check the firmware details table above for file sizes and Android versions.
Final Thoughts
That covers the entire flashing process for the Infinix Note 12 Pro 5G X671B. With V1098 installed, your device should boot cleanly and be ready for setup.
If you encountered an issue not covered here, or if one of the steps did not work as expected, let me know in the comments. Include the error code or screenshot if you have one.
Bookmark this page if you work on Infinix devices regularly. I keep it updated when new firmware versions become available.
Browse all Infinix 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.
