Last Updated: August 4, 2026
If your Infinix Zero 6 X620B is stuck on a logo, locked out, or not responding, this guide walks you through the full recovery process with official firmware, the right flash tool, and clear instructions. ⚡ At a Glance Device: Infinix Zero 6 X620B | Chipset: Qualcomm Snapdragon 636 (SDM636) | Flash Tool: QFIL (Qualcomm Flash Image Loader) Android: Android 8.1 Oreo with XOS | File Type: ZIP (Contains Firehose programmer file [*.mbn], rawprogram0.xml, patch0.xml) ⚠ Warning: Flashing erases all data. Back up first.
Device: Infinix Zero 6 X620B (Qualcomm Snapdragon 636 (SDM636))
Flash Tool: QFIL (Qualcomm Flash Image Loader)
Latest Build: V34
Firmware Files: 3 available
What You Need: Windows PC, USB data cable, QFIL (Qualcomm Flash Image Loader), USB drivers
Time Required: 10-20 minutes (plus 3-8 min first boot)
Infinix Zero 6 X620B Firmware (Flash File) Drivers, Tools & Guide
Qualcomm-powered devices handle flashing differently from MediaTek. QFIL is less forgiving, and selecting the wrong programmer file will stop the process right away. I put this guide together to make things straightforward: the right firmware, the correct QFIL setup, and the steps that work reliably on Infinix Qualcomm devices.
The most important thing to check before you begin: after extracting the firmware, look for the Firehose .mbn file first. If it is not there, you have the wrong package. Do not load it into QFIL hoping it will work, that mistake alone can cost you a lot of time troubleshooting.
The Infinix Zero 6 X620B was originally released in 2019, which means USB driver compatibility on newer Windows versions (10/11) may require manual installation rather than plug-and-play. Powered by a Qualcomm Snapdragon 636 (SDM636) (Qualcomm) processor, the Infinix Zero 6 X620B requires Qualcomm Flash Image Loader (QFIL) and Qualcomm HS-USB drivers. Make sure to install the correct driver package before connecting your device. The stock firmware ships with Android 8.1 Oreo with XOS, which determines the default apps, security features, and interface you will see after flashing.
As a Transsion Holdings brand, Infinix devices share similar chipset architectures and flashing procedures across the Zero 6 lineup. This firmware was sourced directly from verified repositories and checked for integrity before being listed on this page.
Your Infinix Zero 6 X620B 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 Firehose programmer file (*.mbn), rawprogram0.xml, and patch0.xml 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.
FRP Removal for Infinix Zero 6 X620B
The fastest way to bypass FRP on Infinix Zero 6 X620B 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.
Hard Reset Infinix Zero 6 X620B
To factory reset Infinix Zero 6 X620B without a computer, 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 Infinix Zero 6 X620B 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 QFIL (Qualcomm Flash Image Loader) is covered in the following sections.
Choosing the Right Firmware Version
The single biggest mistake I see people make is flashing firmware meant for a different variant. Before downloading anything, verify your exact device identity:
- Identify Your Device Model: Go to About Phone and confirm your model is Infinix Zero 6 X620B. Check the full model string, not just the name.
- Verify the Build Number: Look for the identifier “X620B” in your device build details.
- Confirm the Chipset: According to Infinix specifications, the Zero 6 X620B runs on Qualcomm Snapdragon 636 (SDM636).
- 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.
What Infinix Zero 6 X620B Firmware Fixes
The Infinix Zero 6 X620B is powered by a Qualcomm chipset, and when Qualcomm devices run into software problems, flashing via QFIL is the standard recovery method. Here is what the stock firmware can do:
- Resolve touchscreen responsiveness issues caused by a corrupted system build.
- Fix startup loops, lagging, and freezing on your device.
- Resolve OTA update failures and battery drain issues.
- Update to the latest Android version supported by your phone.
- Clear a forgotten screen lock, PIN, or pattern without needing the original credentials.
- Restore the original Infinix stock ROM to keep your warranty valid.
- Safely exit EDL (9008) mode after a failed flash attempt on your device.
Learn more about stock ROMs and why flashing works.
Firmware Details for Infinix Zero 6 X620B
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Zero 6 X620B |
| Firmware Version | V34 |
| File Size | 2 GB to 2.03 GB |
| Android Version | Android 8.1 Oreo with XOS |
| Platform | Qualcomm Snapdragon 636 (SDM636) |
| Release Date | Released 2019, March |
| Region | Global, Africa and Asia |
| File Type | ZIP (Contains Firehose programmer file [*.mbn], rawprogram0.xml, patch0.xml) |
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 | V34, download this one. It is the latest Infinix Zero 6 X620B 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 V34 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V34 failed with a flash error | Try the next older version instead and double-check your Firehose programmer file (*.mbn), rawprogram0.xml, and patch0.xml selection before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | V34, clean state, fresh start. |
For Qualcomm devices, use the latest build unless you have a specific reason not to. Older Firehose packages can sometimes cause partition table issues that are difficult to fix. The newest build is almost always the right choice.
Download Infinix Zero 6 X620B Firmware
Download the official stock firmware for your Infinix Zero 6 X620B below. The latest available version is V34. 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_Zero_6_Pro_X620B_Q6361A_V34_190108_QPST.zip Size: 2 GB | Download Link | Download Link2 |
| File Name: Infinix_Zero_6_Pro_X620B_Q6361A_V34_190108_QPST.zip Size: 2.03 GB | Download Link | Download Link2 |
| File Name: X620B-Q6361A-O-190108V34-zero6_infinix-user-545-QFIL.zip Size: 2.03 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 Zero 6 X620B (X620B) should not be confused with other Zero 6 variants that may have different chipsets or regional firmware. Even devices in the same Zero 6 line can use completely different processors. Always verify your exact model code “X620B” in Settings > About Phone before downloading any firmware from this page.
- The model code on your phone must match X620B exactly. Even a single letter variant (like adding or dropping an “i” or “s”) can mean a different chipset inside.
- Your chipset should be Qualcomm Snapdragon 636 (SDM636). 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.
Infinix Zero 6 X620B Flash Setup Checklist
Get all of this sorted before you open QFIL for your Infinix Zero 6 X620B. In most cases I have seen with Infinix Qualcomm devices, the 9008 driver installation is where things go wrong first. If Windows does not recognise your device in EDL mode, that is almost always the reason. Install the Qualcomm HS-USB driver first, restart your PC, then proceed.
- Save Your IMEI Numbers: Type *#06# in the phone dialer and note down both numbers. These are your device identifiers for the cellular network. If flashing wipes them, you will need the originals to write them back.
- Disconnect Google Accounts: Before you start anything, remove all Google accounts from the phone. Settings then Accounts then tap each Google account and remove it. This avoids the FRP verification screen that appears after flashing if accounts were still linked.
- Create a Backup: Copy your data to your computer or an SD card. Flashing replaces the entire software on the phone, which means all personal data, apps, and settings will be permanently deleted.
- Charge First: Get the battery above 50% before starting. The flashing process takes a few minutes and the first boot takes several more. A power failure during either stage can leave the device in a state that requires more advanced recovery.
- Prepare Your PC Connection: You need a Windows computer and a USB cable that supports data transfer. Test the cable first by connecting the phone normally, if it shows up in File Explorer, the cable is good.
- Install the Right Drivers:
Install Stock Firmware on Infinix Zero 6 X620B
We are using QFIL from the QPST suite. Make sure your device is in EDL mode, also called 9008 mode, before connecting it. The most reliable way to confirm this is to check Device Manager for “Qualcomm HS-USB QDLoader 9008.” If you see that entry, your device is in the correct mode and you can proceed.
- 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:
- In QFIL, select Flat Build from the “Select Build” dropdown. Click Browse next to “Programmer Path” and select the Firehose .mbn file. Click Load XML and select rawprogram0.xml, then patch0.xml.
- 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.
Video Guide for Flashing
Common Issues When Flashing Infinix Zero 6 X620B
- Device Fails to Enter EDL (9008) Mode:
- Hold Volume Down and Power until the screen goes black, then connect the USB cable. Check Device Manager for “Qualcomm HS-USB QDLoader 9008”, that entry confirms EDL mode is active.
- If it is not showing, the EDL test point method may be needed for your specific device. XDA Developers has guides for most models.
- QFIL “Sahara Communication Failure” Error:
- This almost always means the wrong Firehose programmer file (.mbn) was selected. Go back to the firmware folder and confirm you are selecting the .mbn file specifically.
- Boot Loop After Flashing:
- Enter recovery mode and perform a factory reset. If the recovery partition was also overwritten and is not accessible, you will need to reflash.
- Infinix Zero 6 X620B Not Recognized by QFIL:
- Reinstall the Qualcomm HS-USB QDLoader 9008 driver and restart your PC before retrying. Antivirus software can also interfere here, disable it temporarily during the flash process.
What to Expect After Flashing
Here is what is completely normal after a successful flash:
- How to know the flash was successful: QFIL will display “Download Succeed” in the status bar. If you see this, the flash completed correctly.
- 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.
- 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.
- 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.
- 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.
- 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.
Missing IMEI or Corrupt Baseband on Infinix Zero 6 X620B After Flashing?
A missing IMEI on a Qualcomm device after flashing is less common than on MediaTek, but it does happen, usually when the modem partition was not written correctly or was left out of the flash. QFIL or QPST can be used to address this. XDA Developers has device-specific IMEI repair threads for most Infinix Qualcomm models. Look up your exact model there, the process varies enough between devices that a general guide would not give you accurate steps.
Common Questions About Flashing Infinix Zero 6 X620B
Q1: 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 QFIL (Qualcomm Flash Image Loader) appears stuck, give it a few more minutes before assuming something went wrong.
Q2: 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.
Q3: My device is not detected by QFIL (Qualcomm Flash Image Loader). What should I do?
A: Start with the drivers, reinstall the Qualcomm HS-USB QDLoader 9008 driver, 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.
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: 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.
Q6: Will flashing erase my data?
A: Yes, flashing with QFIL (Qualcomm Flash Image Loader) restores the device to factory state, including Android 8.1 Oreo with XOS 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.
Q7: Can I go back to an older firmware version?
A: It is technically possible on some Qualcomm 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.
Q8: Can I flash this firmware if my phone does not turn on at all?
A: Yes, in most cases. Qualcomm devices can often be detected in EDL (9008) mode even when completely dead, QFIL can flash without the phone being on. If the battery is completely drained, charge it for at least 15 minutes first.
People Also Ask About Infinix Zero 6 X620B
Can flashing firmware fix a bricked Infinix Zero 6 X620B?
Yes. If your Infinix Zero 6 X620B is stuck on the logo, in a bootloop, or will not turn on, flashing the stock firmware with QFIL (Qualcomm Flash Image Loader) can restore it to working condition. This is the standard repair method used by service centers for Infinix devices.
How do I check my Infinix Zero 6 X620B model number before flashing?
Go to Settings > About Phone on your Infinix Zero 6 X620B and look for the model number “X620B”. 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 Zero 6 X620B use?
The Infinix Zero 6 X620B is powered by the Qualcomm Snapdragon 636 (SDM636), a Qualcomm processor. Flashing requires QFIL (Qualcomm Flash Image Loader) and Qualcomm HS-USB QDLoader drivers. The device must be in EDL (Emergency Download) mode for firmware installation.
What is the latest firmware version for Infinix Zero 6 X620B?
The latest available Infinix Zero 6 X620B firmware on this page is version V34. This page has 3 firmware builds available for download. Check the firmware details table above for file sizes and Android versions.
Infinix Zero 6 X620B Firmware, Final Notes
The flash is done. Your Infinix Zero 6 X620B is back on official stock firmware and should be running without the issues that brought you here.
If anything went differently than described, an error message, a step that did not match your setup, post it in the comments. I respond to every question.
This guide gets updated when new builds are released, so you can come back anytime you need a newer version.
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.
