Last Updated: July 29, 2026
Need to restore your Infinix Hot 12 Pro X668C to working condition? Below you will find the official stock ROM, flash tool downloads, driver links, and a complete walkthrough from start to finish.
Device: Infinix Hot 12 Pro X668C | Chipset: Unisoc Tiger T616 | Flash Tool: SPD Research Tool
Android: Android 12, XOS 10.6 | File Type: ZIP (Contains .pac firmware file for SPD Research Tool)
⚠ Warning: Flashing erases all data. Back up first.
Device: Infinix Hot 12 Pro X668C (Unisoc Tiger T616)
Flash Tool: SPD Research Tool
Latest Build: V179
Firmware Files: 7 available
What You Need: Windows PC, USB data cable, SPD Research Tool, USB drivers
Time Required: 10-20 minutes (plus 3-8 min first boot)
Infinix Hot 12 Pro X668C Firmware (Flash File) Drivers, Tools & Guide
The Unisoc chipset in the Infinix Hot 12 Pro X668C requires specific files to flash correctly. This guide provides the stock ROM, drivers, and instructions to fix your device.
Unlike some other phones, this device uses a single compressed file rather than a folder of separate partitions. Make sure your downloaded ZIP actually contains the .pac file before you open the flash tool. A lot of time gets wasted loading an empty archive.
The Infinix Hot 12 Pro X668C was released in 2022. Because it runs on a Unisoc Tiger T616 chipset, you must use SPD Flash Tool and specific SPD USB drivers. These tools are designed for Unisoc-based devices and will not work with MediaTek or Qualcomm phones. This page lists 7 firmware builds for the Infinix Hot 12 Pro X668C, covering various Android versions and security patch levels. If one build does not work, try a different version.
We verified firmware file integrity across multiple sources to confirm these are authentic, unmodified stock ROMs. The Infinix Hot 12 Pro X668C was released in 2022. This page is updated with the latest available firmware builds as they become available.
Your Infinix Hot 12 Pro X668C 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 .pac file before proceeding.
Flashing replaces your current software completely and wipes all personal data. This is by design, it is what clears out FRP locks, bootloops, pattern locks, app crashes, and other software-level problems that a regular reset cannot fix.
FRP Removal for Infinix Hot 12 Pro X668C
The fastest way to bypass FRP on Infinix Hot 12 Pro X668C 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.
Reset Infinix Hot 12 Pro X668C From Recovery Mode
You can factory reset Infinix Hot 12 Pro X668C without a computer by turning off the device completely and 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 Infinix Hot 12 Pro X668C 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 SPD Research Tool is covered in the following sections.
Verify Your Infinix Hot 12 Pro X668C Model Before Downloading
Using the wrong firmware can permanently damage your phone. Before downloading anything, verify your exact device identity:
- Verify Your Exact Model: In Settings, look for the model code “X668C”. Some Infinix phones share the same marketing name but have different internal hardware.
- Confirm the Processor: This build targets the Unisoc Tiger T616 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.
When Should You Flash Infinix Hot 12 Pro X668C?
The Infinix Hot 12 Pro X668C runs on a Unisoc (Spreadtrum) chipset, and the most reliable way to fix software issues on these devices is a clean firmware flash using SPD Research Tool. Here is what the stock firmware can fix:
- Unlock your device if it has been locked or disabled.
- Fix Wi-Fi, Bluetooth, or mobile data connectivity that stopped working after an update.
- Update to the latest Android version supported by your phone.
- Restore system apps that were accidentally removed or corrupted.
- Restore the original Infinix stock ROM to keep your warranty valid.
- Fix startup loops, lagging, and freezing on your device.
- Resolve .pac loading failures and communication errors in SPD Research Tool that prevent normal use of your device.
Learn more about stock ROMs and why flashing works.
Firmware Details for Infinix Hot 12 Pro X668C
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Hot 12 Pro X668C |
| Firmware Version | V82, V179, V154, V148, V027 |
| File Size | 3.23 GB to 3.9 GB |
| Android Version | Android 12, XOS 10.6 |
| Platform | Unisoc Tiger T616 |
| Release Date | Released 2022, August 02 |
| Region | Global, Africa and Asia |
| File Type | ZIP (Contains .pac firmware file for SPD Research Tool) |
Which Firmware Version Should I Download?
This is the question I get asked most often in the comments, so I put together 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 | V179, download this one. It is the latest Infinix Hot 12 Pro X668C 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 V154, sometimes the latest OTA introduces new bugs and an older build runs better. |
| IMEI missing after a previous flash | Re-flash V179 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V179 failed with a flash error | Try V154 instead and double-check your .pac file selection before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | V179, clean state, fresh start. |
With Unisoc devices, I recommend using the latest .pac file first. Older versions of the SPD Research Tool firmware can sometimes cause modem issues, which show up as no signal after flashing. Only try an older version if the latest one does not work for you.
Download Infinix Hot 12 Pro X668C Firmware
Download the official stock firmware for your Infinix Hot 12 Pro X668C below. The latest available version is V179. 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_Hot_12_Pro_X668C_V82_220804_12_SPD.zip Size: 3.8 GB | Download Link | Download Link2 |
| File Name: X668C-F162-12.0-GL-V179-20221108.zip Size: 3.84 GB | Download Link | Download Link2 |
| File Name: X668C-F162RU-12.0-RU-V154-20221031.zip Size: 3.23 GB | Download Link | Download Link2 |
| File Name: X668C-F162-12.0-GL-V148-20220922.zip Size: 3.85 GB | Download Link | Download Link2 |
| File Name: X668C-F162-12.0-GL-V82-20220804.zip Size: 3.78 GB | Download Link | Download Link2 |
| File Name: X668C-F162-12.0-GL-V027-20220621_1705_user.zip Size: 3.7 GB | Download Link | Download Link2 |
| File Name: X668C-F162-12.0-GL-V148-20220922.zip Size: 3.9 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 Hot 12 Pro X668C (X668C) should not be confused with other Hot 12 Pro variants that may have different chipsets or regional firmware. Even devices in the same Hot 12 Pro line can use completely different processors. Always verify your exact model code “X668C” in Settings > About Phone before downloading any firmware from this page.
- Open About Phone and make sure the model code reads X668C. Do not rely on the name printed on the phone case.
- Verify the chipset is Unisoc Tiger T616. You can see this in recovery mode or by checking the device specifications online.
- Use only the download links provided on this page.
- After downloading, right-click the file and check Properties to confirm the size matches the table above. If it does not, download it again.
Prerequisites for Infinix Hot 12 Pro X668C Firmware
Before anything else, and I mean before you even download the Infinix Hot 12 Pro X668C firmware, go through this list. The most common reason Infinix Unisoc flashes fail is skipping the driver installation step. SPD Research Tool is very particular about drivers, and Windows will not always tell you when they are missing.
- IMEI Backup: Open the dialer and enter *#06#. Write both IMEI numbers down on paper or take a screenshot. If you ever need to repair your IMEI after flashing, these are essential.
- Remove All Google Accounts: Go to Settings, Accounts, and sign out of every Google account on the device. Leaving accounts signed in triggers FRP lock after a flash, which blocks you from setting up the phone.
- Backup Everything: Photos, contacts, messages, WhatsApp data, move it all to a computer or cloud service. The flash will restore the phone to factory state with nothing on it.
- 50% Battery Minimum: Do not start with a low battery. If power cuts out during the flash, the device can become unresponsive and much harder to fix.
- USB Cable and Computer: Use a proper data-transfer USB cable and a Windows PC. Avoid USB hubs, connect directly to the motherboard port for a stable connection.
- Download and Install Drivers:
- Infinix USB Drivers (includes Spreadtrum USB drivers)
Step-by-Step: Flash Infinix Hot 12 Pro X668C Stock ROM
We are using the SPD Research Tool for this. It is the standard tool for Unisoc-based devices. One thing I always do: run it as Administrator. Right-click the .exe and choose “Run as administrator.” This prevents a number of permission-related errors. You can also follow the video guide below if you prefer to see the process in action.
- Get the Firmware Ready:
- Download the firmware file from the download section above.
- Right-click the ZIP and select “Extract Here” or use 7-Zip. Put the extracted files in a folder without spaces in the name, like
C:firmware.
- Verify Your Drivers:
- Make sure the required drivers are installed. After installing, restart your PC, drivers often do not activate until after a reboot.
- Load the Firmware File:
- Click the “Load Packet” button and navigate to the extracted folder to select the .pac 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:
- Hit the “Start” button in the flash tool to start the process.
- Leave the phone and cable completely alone until it finishes. Any interruption during this stage risks corrupting the flash.
- Wait and Reboot:
- When the flash completes, unplug the USB cable from your phone.
- Turn on the device. First boot takes 3 to 8 minutes, do not force restart it during this time.
Video Guide for Flashing
Fix Common Infinix Hot 12 Pro X668C Firmware Errors
- Infinix Hot 12 Pro X668C Not Recognized by SPD Research Tool:
- In most cases this is a driver issue, not a cable issue. Reinstall the Spreadtrum USB drivers for the X668C, restart your PC, then try again.
- If the device is still not detected, try a different USB port, USB 2.0 ports tend to work more reliably with Unisoc devices than USB 3.0.
- Temporarily disable your antivirus software, it can sometimes block the Spreadtrum driver from loading without showing any error.
- Boot Loop After Flashing:
- Enter recovery mode and perform a factory reset. This resolves most post-flash bootloops on Unisoc devices. If recovery mode is also not accessible, reflash the firmware from scratch.
- Wrong .pac File Selected for X668C:
- If SPD Research Tool throws an error immediately after you load the file, you have likely selected the wrong firmware. Confirm that the .pac file model code matches your Infinix Hot 12 Pro X668C exactly.
- No Signal After Flashing:
- This usually points to an IMEI issue. Dial *#06#, if it shows null or unknown, follow the IMEI repair guide above before inserting your SIM card.
Post-Flash Behavior on Infinix Hot 12 Pro X668C
Here is what is completely normal after a successful flash:
- How to know the flash was successful: SPD Research Tool will show a green “PASSED” message when the flash is complete. If you see this, you are done.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
Missing IMEI or Corrupt Baseband on Infinix Hot 12 Pro X668C After Flashing?
A missing IMEI after a Unisoc flash usually means the NVRAM partition was not written correctly during the flash. This happens more often than it should on SPD devices. The WriteIMEI Tool handles this well for Unisoc. Just make sure you have your original IMEI written down from before you flashed, dial *#06# before starting next time. Without the original number, you cannot restore it properly.
Use WriteIMEI Tool for Unisoc to restore it. The video guide below shows the exact steps.
Video Guide: How to repair IMEI
Questions About Infinix Hot 12 Pro X668C Firmware
Q1: 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.
Q2: My device is not detected by SPD Research Tool. What should I do?
A: Start with the drivers, reinstall the Spreadtrum USB 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.
Q3: 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.
Q4: 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.
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 Unisoc devices, use the WriteIMEI Tool. Do not insert a SIM card until the IMEI is restored.
Q6: Is this firmware compatible with other Infinix models?
A: No. This firmware is built specifically for the Infinix Hot 12 Pro X668C running on the Unisoc Tiger T616 chipset. Even variants of the Hot 12 Pro 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.
Q7: What if the flash fails halfway through?
A: Do not panic and do not disconnect the phone. Close SPD Research 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.
Q8: 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 SPD Research Tool appears stuck, give it a few more minutes before assuming something went wrong.
People Also Ask About Infinix Hot 12 Pro X668C
Can flashing firmware fix a bricked Infinix Hot 12 Pro X668C?
Yes. If your Infinix Hot 12 Pro X668C is stuck on the logo, in a bootloop, or will not turn on, flashing the stock firmware with SPD Research Tool can restore it to working condition. This is the standard repair method used by service centers for Infinix devices.
Will flashing firmware on Infinix Hot 12 Pro X668C erase my data?
Yes. Flashing stock firmware on the Infinix Hot 12 Pro X668C with SPD Research 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.
How do I check my Infinix Hot 12 Pro X668C model number before flashing?
Go to Settings > About Phone on your Infinix Hot 12 Pro X668C and look for the model number “X668C”. 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.
What chipset does the Infinix Hot 12 Pro X668C use?
The Infinix Hot 12 Pro X668C runs on the Unisoc Tiger T616, a Unisoc (Unisoc/Spreadtrum) processor. You will need SPD Flash Tool (also called SPD Research Tool) and SPD USB drivers to flash firmware on this device.
You now have the resources needed to flash your Infinix Hot 12 Pro X668C back to stock using SPD Research Tool. The process is straightforward as long as you follow the steps in order and do not skip the driver installation.
Got stuck somewhere? Drop a comment with the error message and the step number. I check comments regularly and will point you in the right direction.
If this worked for you, share the page so others with the same device can find it too.
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.
