Last Updated: July 28, 2026
You can fix your X573B Hot S3 with the official Infinix Hot S3 X573B firmware available on this page. I have included the flash files, drivers, and clear steps for hard reset, FRP bypass, and IMEI repair.
Device: Infinix Hot S3 X573B | Chipset: Qualcomm Snapdragon 430 (MSM8937) | Flash Tool: QFIL (Qualcomm Flash Image Loader)
Android: Android 8.1 (Oreo) | File Type: ZIP (Contains Firehose programmer file [*.mbn], rawprogram0.xml, patch0.xml)
⚠ Warning: Flashing erases all data. Back up first.
Device: Infinix Hot S3 X573B (Qualcomm Snapdragon 430 (MSM8937))
Flash Tool: QFIL (Qualcomm Flash Image Loader)
Latest Build: V45
Firmware Files: 5 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 Hot S3 X573B Firmware (Flash File) Drivers, Tools & Guide
Qualcomm-powered devices handle flashing differently from MediaTek phones. QFIL is less forgiving, and picking the wrong programmer file will stop the process immediately. I put this guide together to make things straightforward: the correct firmware, the proper QFIL setup, and the steps that work reliably on Infinix Qualcomm devices.
The most important thing to check before you begin is the Firehose .mbn file inside the extracted firmware. If that file is missing, 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.
Powered by a Qualcomm Snapdragon 430 (MSM8937) processor, the Infinix Hot S3 X573B requires Qualcomm Flash Image Loader (QFIL) and Qualcomm HS-USB drivers. Make sure to install the correct driver package before connecting your device. This page lists 5 firmware builds for the Infinix Hot S3 X573B, covering multiple Android versions and security patch levels. If one build does not work, try a different version. The Infinix Hot S3 X573B was originally released in 2018, which means USB driver compatibility on newer Windows versions (10/11) may require manual installation rather than plug-and-play.
The Infinix Hot S3 X573B was released in 2018. This page is maintained with the latest available firmware builds as they become available. As a Transsion Holdings brand, Infinix devices share similar chipset architectures and flashing procedures across the Hot S3 lineup.
Your Infinix Hot S3 X573B 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.
Be aware that flashing overwrites the entire software partition. Your data, apps, and accounts will all be removed. This full wipe is how the flash resolves deep software issues, anything from FRP locks and boot failures to Wi-Fi problems and app crashes.
Infinix Hot S3 X573B Google Account Bypass After Reset
The fastest way to bypass FRP on Infinix Hot S3 X573B 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.
Factory Reset Infinix Hot S3 X573B Without a PC
To factory reset Infinix Hot S3 X573B 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 Hot S3 X573B 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.
How to Pick the Correct Infinix Hot S3 X573B Firmware
The most frequent error users encounter is flashing firmware meant for a different variant. Before downloading anything, verify your exact device identity:
- Check About Phone: Open Settings and find your exact model number. It should read “X573B”, not a similar name, the exact code.
- Match the Chipset: This firmware is built for Qualcomm Snapdragon 430 (MSM8937). If your device has a different processor, it will not flash correctly.
- Look at the Build Number: The build string in your current software should reference the Hot S3 line. Cross-check it with the firmware table below.
- Check Recovery Mode: Power off, hold Volume Up + Power until recovery appears. The screen displays your chipset and current build, use this to confirm.
- Compare File Details: Make sure the version listed in the download table matches what you expect for your device and region.
When Should You Flash Infinix Hot S3 X573B?
The Infinix Hot S3 X573B 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:
- Remove persistent malware or adware that survives a factory reset.
- Resolve OTA update failures and battery drain issues.
- Recover your device when it only boots into recovery mode.
- Update to the latest Android version supported by your phone.
- Clear a forgotten screen lock, PIN, or pattern without needing the original credentials.
- Restore system apps that were accidentally removed or corrupted.
- 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 Hot S3 X573B
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Hot S3 X573B |
| Firmware Version | V45, V19 |
| File Size | 1.73 GB to 2.1 GB |
| Android Version | Android 8.1 (Oreo) |
| Platform | Qualcomm Snapdragon 430 (MSM8937) |
| Release Date | Released 2018 |
| 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 | V45, download this one. It is the latest Infinix Hot S3 X573B 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 V19, sometimes the latest OTA introduces new bugs and an older build runs better. |
| IMEI missing after a previous flash | Re-flash V45 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V45 failed with a flash error | Try V19 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 | V45, 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 Hot S3 X573B Firmware
Download the official stock firmware for your Infinix Hot S3 X573B below. The latest available version is V45. 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_S3_X573B_V45_190528_QPST.zip Size: 2.08 GB | Download Link | Download Link2 |
| File Name: Infinix_Hot_S3_X573B_V45_190528_QPST.zip Size: 2.1 GB | Download Link | Download Link2 |
| File Name: Infinix_Hot_S3_X573B_V45_190528_QPST.zip Size: 2.08 GB | Download Link | Download Link2 |
| File Name: INFINIX-HOT-S3-X573B-ql 1668A-O-IN-190528V45-FLASH-FILE.rar Size: 1.73 GB | Download Link | Download Link2 |
| File Name: X573B-QL1668DEF-O-IN-20180105V19 Size: 1.9 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 S3 X573B (X573B) should not be confused with other Hot S3 variants that may have different chipsets or regional firmware. Even devices in the same Hot S3 line can use completely different processors. Always verify your exact model code “X573B” in Settings > About Phone before downloading any firmware from this page.
- The model code on your phone must match X573B 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 430 (MSM8937). 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 Hot S3 X573B Flash Setup Checklist
Get all of this sorted before you open QFIL for your Infinix Hot S3 X573B. 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.
- Record IMEI Before Flashing: Dial *#06# and save both IMEI numbers somewhere safe, a screenshot works. If flashing corrupts the baseband, these numbers are what you will need to restore cellular connectivity.
- Unlink Google Accounts: Go to Settings, then Accounts, and remove all Google accounts. This prevents Factory Reset Protection from activating after the flash. It is the single most skipped step and causes the most post-flash headaches.
- Full Data Backup: Flashing erases everything. Transfer your photos, contacts, app data, and any important files to your computer or cloud backup before starting.
- Charge the Battery: Make sure you have at least 50% charge. A dead battery during a flash can corrupt the system partition and turn a fixable problem into a much bigger one.
- Windows PC and USB Cable: You will need a Windows computer and a data-capable USB cable. Cheap charge-only cables are the number one reason flash tools fail to detect devices.
- Driver Installation:
How to Install Firmware on Infinix Hot S3 X573B
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 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:
- 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:
- 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.
Video Guide for Flashing
Troubleshooting Infinix Hot S3 X573B Flash Errors
- Infinix Hot S3 X573B Not Entering 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 Hot S3 X573B 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.
Post-Flash Behavior on Infinix Hot S3 X573B
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.
- 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.
- 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.
- 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 Hot S3 X573B 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 Hot S3 X573B
Q1: 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.
Q2: 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.
Q3: 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.
Q4: What if the flash fails halfway through?
A: Do not panic and do not disconnect the phone. Close QFIL (Qualcomm Flash Image Loader), 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.
Q5: 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.
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) 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: Is this firmware compatible with other Infinix models?
A: No. This firmware is built specifically for the Infinix Hot S3 X573B running on the Qualcomm Snapdragon 430 (MSM8937) chipset. Even variants of the Hot S3 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 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.
People Also Ask About Infinix Hot S3 X573B
What chipset does the Infinix Hot S3 X573B use?
The Infinix Hot S3 X573B is powered by the Qualcomm Snapdragon 430 (MSM8937), 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.
Will flashing firmware on Infinix Hot S3 X573B erase my data?
Yes. Flashing stock firmware on the Infinix Hot S3 X573B with QFIL (Qualcomm Flash Image Loader) 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 S3 X573B model number before flashing?
Go to Settings > About Phone on your Infinix Hot S3 X573B and look for the model number “X573B”. 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 is the latest firmware version for Infinix Hot S3 X573B?
The latest available Infinix Hot S3 X573B firmware on this page is version V45. This page has 5 firmware builds available for download. Check the firmware details table above for file sizes and Android versions.
Final Thoughts
That is everything you need to safely flash the official Infinix Hot S3 X573B firmware (V45) using QFIL (Qualcomm Flash Image Loader) 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 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.
