Last Updated: August 16, 2026
This page provides the complete resources to restore your Infinix Smart 5 Pro X657B. You will find the official stock ROM, necessary drivers, flashing tools, and detailed instructions to resolve bootloops, bypass FRP locks, and perform a clean reflash. ⚡ At a Glance Device: Infinix Smart 5 Pro X657B | Chipset: Unisoc SC9863A (28 nm) | Flash Tool: SPD Research Tool Android: Android 11 (Go edition), XOS 7.6 | File Type: ZIP (Contains .pac firmware file for SPD Research Tool) ⚠ Warning: Flashing erases all data. Back up first. Quick Summary Device: Infinix Smart 5 Pro X657B (Unisoc SC9863A (28 nm)) Flash Tool: SPD Research Tool Latest Build: V1102 Firmware Files: 5 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 Smart 5 Pro X657B Firmware (Flash File) Drivers, Tools & Guide
One common issue with Unisoc devices is selecting the wrong .pac file, which leads to errors in SPD Research Tool. This guide provides the correct firmware, tool, and steps to resolve the problem. The Infinix Smart 5 Pro X657B firmware is a single .pac file, unlike MediaTek devices which use multiple partitions. You must confirm the downloaded ZIP contains the .pac file before opening the flash tool to avoid loading an empty archive.
This page lists 5 firmware builds for the Infinix Smart 5 Pro X657B, covering various Android versions and security patches. The stock ROM ships with Android 11 (Go edition) and XOS 7.6. The device was originally released in 2021, so USB driver compatibility on newer Windows versions may require manual installation rather than plug-and-play. These files are sourced from verified repositories and checked for integrity.
Download the Infinix Smart 5 Pro X657B firmware as a compressed ZIP file. Extract it using WinRAR or 7-Zip and verify the .pac file is present before proceeding. Flashing stock firmware erases all data, which is intended to resolve software issues including FRP lock, app problems, slow performance, forgotten patterns, a dead or logo-stuck device, Wi-Fi and Bluetooth issues, battery drain, and soft brick situations.
How to Wipe Infinix Smart 5 Pro X657B to Factory Settings
To factory reset Infinix Smart 5 Pro X657B without a computer, power off the device completely. 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 Smart 5 Pro X657B to its original factory state. This resolves most software problems such as slow performance, app crashes, forgotten locks, and bootloops. If the issue persists after a factory reset, a full firmware flash using SPD Research Tool is required.
Infinix Smart 5 Pro X657B FRP Bypass
The fastest way to bypass FRP on Infinix Smart 5 Pro X657B is to use a free Android apps launcher that allows access to settings during the setup wizard. After flashing or performing a factory reset, a Google account lock (FRP) may appear. Using our free Android apps launcher bypasses this screen quickly. This is why removing a Google account before flashing is recommended to avoid this issue entirely.
When Should You Flash Infinix Smart 5 Pro X657B?
The Infinix Smart 5 Pro X657B runs on a Unisoc (Spreadtrum) chipset, and a clean firmware flash using SPD Research Tool is the most reliable method for fixing software issues. Here is what the stock firmware can accomplish:
- Fix Wi-Fi, Bluetooth, or mobile data connectivity issues after an update.
- Update to the latest Android version supported by the device.
- Clear a forgotten screen lock, PIN, or pattern without needing credentials.
- Restore the original Infinix stock ROM to maintain warranty status.
- Resolve touchscreen responsiveness problems caused by a corrupted system build.
- Unlock a disabled or locked device.
- Resolve .pac loading failures and communication errors in SPD Research Tool.
Learn more about stock ROMs and the benefits of flashing.
Verify Your Infinix Smart 5 Pro X657B Model Before Downloading
The most common mistake is flashing firmware meant for a different variant. Before downloading, you must verify your exact device identity:
- Identify Your Device Model: Go to About Phone and confirm the model is Infinix Smart 5 Pro X657B. Check the full model string, not just the name.
- Verify the Build Number: Look for the identifier “X657B” in your device build details.
- Confirm the Chipset: According to specifications, the Smart 5 Pro X657B runs on Unisoc SC9863A (28 nm).
- Match the Firmware Version: Check the version and regional details against the download table above.
- Verify in Recovery Mode: Boot into recovery mode to display this information clearly, which is the most reliable way to confirm before flashing.
Firmware Details for Infinix Smart 5 Pro X657B
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Infinix Smart 5 Pro X657B |
| Firmware Version | V1102, V1076, V790, V765, V478 |
| File Size | 1.84 GB to 1.9 GB |
| Android Version | Android 11 (Go edition), XOS 7.6 |
| Platform | Unisoc SC9863A (28 nm) |
| Release Date | Released 2021, November 17 |
| 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 most common question in the comments, so follow this guide to find the right file:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | V1102, download this one. It is the latest Infinix Smart 5 Pro X657B 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 V1076, sometimes the latest OTA introduces new bugs and an older build runs better. |
| IMEI missing after a previous flash | Re-flash V1102 first, then follow the IMEI repair guide. Do not skip the reflash. |
| V1102 failed with a flash error | Try V1076 instead and double-check your .pac file selection before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | V1102, clean state, fresh start. |
With Unisoc devices, it is recommended to use 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 Smart 5 Pro X657B Firmware
Download the official stock firmware for your Infinix Smart 5 Pro X657B below. The latest available version is V1102. 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-SMART-5-X657B-H6117EIKL-RGo-OP-S2-221121V1102-Flash-File.zip Size: 1.9 GB | Download Link | Download Link2 |
| File Name: INFINIX-SMART-5-X657B-H6117EIKL-RGo-OP-S2-220820V1076-Flash-File.zip Size: 1.89 GB | Download Link | Download Link2 |
| File Name: INFINIX-SMART-5-X657B-H6117EIKL-RGo-OP-S2-220118V790-Flash-File.zip Size: 1.87 GB | Download Link | Download Link2 |
| File Name: INFINIX-SMART-5-X657B-H6117EIK-RGo-OP-S2-220110V765-Flash-File.zip Size: 1.87 GB | Download Link | Download Link2 |
| File Name: INFINIX-SMART-5-X657B-H6117K-RGo-OP-S2-211103V478.zip Size: 1.84 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 Smart 5 Pro X657B (X657B) should not be confused with other Smart 5 Pro variants that may have different chipsets or regional firmware. Even devices in the same Smart 5 Pro line can use completely different processors. Always verify your exact model code “X657B” in Settings > About Phone before downloading any firmware from this page.
- Your model number is a variant of X657B with a different letter suffix. Check About Phone carefully, one letter difference can cause a failed or broken flash.
- Your chipset differs from Unisoc SC9863A (28 nm). Confirm in recovery mode before proceeding.
- You downloaded the file from a source other than this page.
- The file size differs significantly from the sizes listed in the table above, a size mismatch usually means a partial download, which will fail mid-flash.
Prerequisites for Infinix Smart 5 Pro X657B Firmware
Before downloading the Infinix Smart 5 Pro X657B firmware, go through this list. The most common reason Unisoc flashes fail is skipping the driver installation step. SPD Research Tool requires specific drivers, and Windows does not always notify you when they are missing.
- 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 starting, 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:
- Infinix USB Drivers (includes Spreadtrum USB drivers)
How to Install Firmware on Infinix Smart 5 Pro X657B
We use the SPD Research Tool for this. It is the standard tool for Unisoc-based devices. Running it as Administrator helps prevent permission-related errors. Right-click the .exe and choose “Run as administrator.” You can also follow the video guide below if you prefer to see the process in action.
- Download and Unpack:
- Pick 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 end up with the actual firmware files, not another archive.
- Driver Check:
- Double-check that you have installed the required drivers. A missing driver is the most common reason the flash tool cannot detect your phone. Reboot your PC after installing.
- 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:
- Start the flash by clicking “Start”.
- 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.
Video Guide for Flashing
After Flashing: What Happens Next on Infinix Smart 5 Pro X657B
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.
- 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.
- 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.
- 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.
- 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.
- 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.
Infinix Smart 5 Pro X657B Flashing Problems and Fixes
- Infinix Smart 5 Pro X657B 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 X657B, 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 X657B:
- 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 Smart 5 Pro X657B 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.
Missing IMEI or Corrupt Baseband on Infinix Smart 5 Pro X657B 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
Frequently Asked Questions
Q1: Will flashing erase my data?
A: Yes, flashing with SPD Research Tool restores the device to factory state, including Android 11 (Go edition), XOS 7.6 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.
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: 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.
Q4: 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.
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: 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.
Q7: 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.
Q8: 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.
People Also Ask About Infinix Smart 5 Pro X657B
Can flashing firmware fix a bricked Infinix Smart 5 Pro X657B?
Yes. If your Infinix Smart 5 Pro X657B 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.
How do I check my Infinix Smart 5 Pro X657B model number before flashing?
Go to Settings > About Phone on your Infinix Smart 5 Pro X657B and look for the model number “X657B”. 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.
Will flashing firmware on Infinix Smart 5 Pro X657B erase my data?
Yes. Flashing stock firmware on the Infinix Smart 5 Pro X657B 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.
What is the latest firmware version for Infinix Smart 5 Pro X657B?
The latest available Infinix Smart 5 Pro X657B firmware on this page is version V1102. This page has 5 firmware builds available for download. Check the firmware details table above for file sizes and Android versions.
Summary
The flash is complete. Your Infinix Smart 5 Pro X657B 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.
