Last Updated: July 25, 2026
If your Infinix Zero 5 X603 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.
Device: Infinix Zero 5 X603 | Chipset: MediaTek MT6757 Helio P25 | Flash Tool: SP Flash Tool
Android: Android 7.0 Nougat (XOS Chameleon 3.0) | 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 Zero 5 X603 (MediaTek MT6757 Helio P25)
Flash Tool: SP Flash Tool
Latest Build: V335
Firmware Files: 16 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 Zero 5 X603 Firmware (Flash File) Drivers, Tools & Guide
I have fixed many of these over the years, and the Infinix Zero 5 X603 is one that comes in frequently, most often with FRP locks, bootloop issues, or stuck on the Infinix logo. This guide covers all of it. I have put everything you need in one place: the firmware, the tools, and the exact process I use myself.
One thing I always recommend before you start: extract the firmware to a simple folder path, something like C:FirmwareX603. SP Flash Tool can sometimes have trouble locating the scatter file if the folder path contains spaces or special characters. It is a small thing, but it saves a frustrating few minutes of wondering why the tool is not loading the file.
The Infinix Zero 5 X603 runs on a MediaTek MT6757 Helio P25 chipset, which means you will use SP Flash Tool and VCOM/MTK drivers for flashing. These are included in the prerequisites below. The stock firmware ships with Android 7.0 Nougat (XOS Chameleon 3.0), which determines the default apps, security features, and interface you will see after flashing. The Infinix Zero 5 X603 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 Zero 5 X603 was released in 2018. This page is maintained with the latest available firmware builds as they become available. With 16 firmware versions archived for the Infinix Zero 5 X603, this page covers multiple Android builds and security patch levels.
Your Infinix Zero 5 X603 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.
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.
Remove FRP Lock on Infinix Zero 5 X603
The fastest way to bypass FRP on Infinix Zero 5 X603 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 Zero 5 X603 From Recovery Mode
To factory reset Infinix Zero 5 X603 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 5 X603 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.
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:
- Verify Your Exact Model: In Settings, look for the model code “X603”. Some Infinix phones share the same marketing name but have different internal hardware.
- Confirm the Processor: This build targets the MediaTek MT6757 Helio P25 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.
Why Flash Stock ROM on Infinix Zero 5 X603?
The Infinix Zero 5 X603 uses a MediaTek chipset, and SP Flash Tool is the standard method for firmware recovery on MTK devices. Here is what flashing the stock firmware can help with:
- Remove persistent malware or adware that survives a factory reset.
- Resolve touchscreen responsiveness issues caused by a corrupted system build.
- Fix Wi-Fi, Bluetooth, or mobile data connectivity that stopped working after an update.
- Unlock your device if it has been locked or disabled.
- Resolve OTA update failures and battery drain issues.
- 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.
Firmware Details for Infinix Zero 5 X603
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Zero 5 X603 |
| Firmware Version | V27, V335, V306, V56, V75, V175, V189, V247, V47, V105, V92 |
| File Size | 1.28 GB to 1.78 GB |
| Android Version | Android 7.0 Nougat (XOS Chameleon 3.0) |
| Platform | MediaTek MT6757 Helio P25 |
| Release Date | Released 2018 |
| 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 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 | V335, download this one. It is the latest Infinix Zero 5 X603 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 V306, sometimes the latest OTA introduces new bugs and an older build runs better. |
| IMEI missing after a previous flash | Re-flash V335 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V335 failed with a flash error | Try V306 instead and double-check your scatter file selection before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | V335, 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 Zero 5 X603 Firmware
Download the official stock firmware for your Infinix Zero 5 X603 below. The latest available version is V335. 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_5_X603_MT6757_V27_171103.zip Size: N/A | Download Link | Download Link2 |
| File Name: Infinix_Zero_5_X603_MT6757_V335_190610.zip Size: 1.76 GB | Download Link | Download Link2 |
| File Name: Infinix_Zero_5_X603_MT6757_V306_181108.zip Size: 1.73 GB | Download Link | Download Link2 |
| File Name: Infinix_Zero_5_X603_MT6757_V335.zip Size: 1.74 GB | Download Link | Download Link2 |
| File Name: Infinix X603-H575B-N-IN-171227V56.rar Size: 1.28 GB | Download Link | Download Link2 |
| File Name: Infinix X603-H575B-N-IN-180206V75.rar Size: 1.3 GB | Download Link | Download Link2 |
| File Name: Infinix X603-H575A-N-IN-171227V175.rar Size: 1.28 GB | Download Link | Download Link2 |
| File Name: Infinix X603-H575A-N-IN-180206V189.rar Size: 1.3 GB | Download Link | Download Link2 |
| File Name: INFINIX-ZERO-5-X603-H575A-N-IN-190610V247-Flash-File.zip Size: 1.62 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-171103V47 Size: 1.78 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-180420V105 Size: 1.78 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-IN-171103V27 Size: 1.73 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-IN-171227V56 Size: 1.47 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-IN-180206V75 Size: 1.46 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-IN-180420V92 Size: 1.48 GB | Download Link | Download Link2 |
| File Name: X603-H575B-N-IN-181127V105 Size: 1.55 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 5 X603 (X603) should not be confused with other Zero 5 variants that may have different chipsets or regional firmware. Even devices in the same Zero 5 line can use completely different processors. Always verify your exact model code “X603” in Settings > About Phone before downloading any firmware from this page.
- Go to Settings and verify your model is exactly X603. Phones with similar names can have completely different hardware.
- The chipset in your device should be MediaTek MT6757 Helio P25. 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.
Before You Start: Infinix Zero 5 X603 Requirements
Do not skip this section. Most failed Infinix flashes come from rushing through the preparation steps. The VCOM driver installation is essential for the Infinix Zero 5 X603 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.
- 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:
Flashing Infinix Zero 5 X603 Firmware With SP Flash Tool
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.
- Prepare the Flash Files:
- Go to the download section and grab the firmware package that matches your device.
- Unzip the file to a folder on your desktop. Avoid using folder names with non-English characters or spaces, the flash tool may not read them correctly.
- Confirm Driver Setup:
- The drivers listed in prerequisites need to be installed and working before you connect the phone. If you are not sure, reinstall them and restart your computer.
- 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 “Download” to kick off the firmware write.
- Hands off the phone and cable until the tool shows completion. Moving or disconnecting the device mid-flash is the most common cause of a bricked phone.
- Wait and Reboot:
- When you see the success message, disconnect the USB cable.
- Hold the power button to boot the phone. Give it a solid 5 to 8 minutes for the first startup, this is normal.
Infinix Zero 5 X603 Flashing Problems and Fixes
- Infinix Zero 5 X603 Not Recognized by SP Flash Tool:
- In most cases this is a driver issue, not a cable issue. Reinstall the VCOM drivers for the X603, 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.
Post-Flash Behavior on Infinix Zero 5 X603
Here is what is completely normal after a successful 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.
- 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.
- 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.
- 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.
- 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.
- 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.
Missing IMEI or Corrupt Baseband on Infinix Zero 5 X603 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
Infinix Zero 5 X603 Firmware FAQ
Q1: Will flashing erase my data?
A: Yes, flashing with SP Flash Tool restores the device to factory state, including Android 7.0 Nougat (XOS Chameleon 3.0) 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 Infinix models?
A: No. This firmware is built specifically for the Infinix Zero 5 X603 running on the MediaTek MT6757 Helio P25 chipset. Even variants of the Zero 5 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.
Q3: 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.
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: 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.
Q6: 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.
Q7: 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.
Q8: What if the flash fails halfway through?
A: Do not panic and do not disconnect the phone. Close SP Flash 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.
People Also Ask About Infinix Zero 5 X603
What chipset does the Infinix Zero 5 X603 use?
The Infinix Zero 5 X603 uses the MediaTek MT6757 Helio P25 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.
Can flashing firmware fix a bricked Infinix Zero 5 X603?
Yes. If your Infinix Zero 5 X603 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.
How do I check my Infinix Zero 5 X603 model number before flashing?
Go to Settings > About Phone on your Infinix Zero 5 X603 and look for the model number “X603”. 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 Zero 5 X603?
The latest available Infinix Zero 5 X603 firmware on this page is version V335. This page has 16 firmware builds available for download. Check the firmware details table above for file sizes and Android versions.
Final Thoughts
The flash is done. Your Infinix Zero 5 X603 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.
