Samsung Galaxy S II LTE I9210 GT-I9210 Firmware

Last Updated: July 4, 2026

If your Samsung Galaxy S II LTE I9210 GT-I9210 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.

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Samsung Galaxy S II LTE I9210 GT-I9210 Firmware (Flash File) Drivers, Tools & Guide

Flashing Samsung firmware with Odin is fairly straightforward once you know what to look out for. I have put everything together on this page: the right firmware file for the Samsung Galaxy S II LTE I9210 GT-I9210, the correct Odin version, and the steps that work.

One thing to do before you start: if your device has a Samsung account signed in, sign it out before doing anything else. Knox will trigger if this step is skipped, and dealing with a KG lock after flashing takes extra time. Also, Samsung firmware comes in .tar.md5 format, after extracting the ZIP, you should see files named AP_*, BL_*, CP_*, and CSC_* (or HOME_CSC_*). If you do not see these, you have the wrong package.

Powered by a Qualcomm APQ8060 Snapdragon S3 (Qualcomm) processor, the Samsung Galaxy S II LTE I9210 GT-I9210 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 2.3 (Gingerbread), upgradable to 4.1 (Jelly Bean), which determines the default apps, security features, and interface you will see after flashing. The Samsung Galaxy S II LTE I9210 GT-I9210 was originally released in 2011, which means USB driver compatibility on newer Windows versions (10/11) may require manual installation rather than plug-and-play.

Samsung firmware uses a multi-file system (AP, BL, CP, CSC) specific to Odin-based flashing, which differs from single-file scatter-based tools. The Samsung Galaxy S II LTE I9210 GT-I9210 was released in 2011. This page is maintained with the latest available firmware builds as they become available.

Your Samsung Galaxy S II LTE I9210 GT-I9210 firmware comes as a compressed ZIP file. Download and extract it using WinRAR or 7-Zip. After extracting, you should see files named like AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and CSC_*.tar.md5 (or HOME_CSC_*.tar.md5). If you do not see these files, you may have the wrong firmware package for your device.

A full flash will erase everything on the device: apps, accounts, photos, and settings. That is the point, it gives you a clean slate and resolves issues like screen locks, FRP prompts, dead boot states, sluggish performance, and connectivity problems.

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Samsung Galaxy S II LTE I9210 GT-I9210 Google Account Bypass After Reset

The fastest way to bypass FRP on Samsung Galaxy S II LTE I9210 GT-I9210 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.

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Samsung Galaxy S II LTE I9210 GT-I9210 Hard Reset Guide

To factory reset Samsung Galaxy S II LTE I9210 GT-I9210 without a computer, power off the device completely, then hold Volume Up + Power (for older models with a Home button, use Volume Up + Home + 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 Samsung Galaxy S II LTE I9210 GT-I9210 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 Odin is covered in the following sections.

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Verify Your Samsung Galaxy S II LTE I9210 GT-I9210 Model Before Downloading

The single biggest mistake I see people make is flashing firmware meant for a different variant. Before downloading anything, verify your exact device identity:

1. Identify Your Exact Model Number: Go to Settings › About Phone and note your full model number (e.g. GT-I9210). The letter suffix matters, U/U1 = USA, W = Canada, N = Korea, B/F = International/Global. Flashing firmware built for a different variant can cause issues.
2. Match the CSC (Region): The 3-letter region code in the firmware filename must match your device. Check Settings › About Phone › Software Information for your current CSC, or look at the Service Provider line in Download Mode. Common codes: XAA (US), BTU (UK), INS (India), SER (Russia).
3. Check the Binary Level: Look at the version string in your current firmware (e.g. XXU9BZDP, the number after the letters is the binary level). You cannot downgrade to a lower binary level. If your device is on Binary 9, only flash Binary 9 or higher firmware.
4. Confirm the Build Date: The last 4 characters of the PDA version encode the build date, first character is the year (A=2024, B=2025, C=2026), second is the month (A=Jan through L=Dec).
5. Verify in Download Mode: Power off, hold Volume Down + Power to enter Download Mode. This screen shows your exact model, CSC, and current firmware version, use this to confirm before flashing.

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Common Reasons to Reinstall Samsung Galaxy S II LTE I9210 GT-I9210 Firmware

Samsung devices like the Samsung Galaxy S II LTE I9210 GT-I9210 are flashed using Odin, regardless of the chipset inside. Whether you are dealing with a boot issue or a software problem, flashing the official firmware can resolve it:

• Remove persistent malware or adware that survives a factory reset.
• Repair a phone that shuts down randomly or restarts in a loop.
• Restore system apps that were accidentally removed or corrupted.
• Update to the latest Android version supported by your phone.
• Resolve OTA update failures and battery drain issues.
• Resolve touchscreen responsiveness issues caused by a corrupted system build.
• Recover from KG lock or Knox-related issues after an incorrect or interrupted flash on your device.

Learn more about stock ROMs and why flashing works.

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Firmware Details for Samsung Galaxy S II LTE I9210 GT-I9210

Here is a quick overview of the official firmware specifications:

Firmware Information	Details
Device Model	Samsung Galaxy S II LTE I9210 GT-I9210
Firmware Version	N/A
File Size	349 MB
Android Version	Android 2.3 (Gingerbread), upgradable to 4.1 (Jelly Bean)
Platform	Qualcomm APQ8060 Snapdragon S3
Release Date	Released 2011, November
Region	Global, Africa and Asia
File Type	.tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin)

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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	the latest version, download this one. It is the latest Samsung Galaxy S II LTE I9210 GT-I9210 firmware available.
FRP / Google account lock only	See the FRP bypass guide above, you likely do not need the full firmware for this.
Not sure which region/CSC to download	Check Settings › About Phone › Software Information for your current CSC, or enter Download Mode (Volume Down + Power), it shows the CSC on screen. Match the 3-letter code (e.g. XAA, BTU, INS) to the firmware filename.
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. Make sure the binary level is the same or higher than what your device currently has.
IMEI missing after a previous flash	Re-flash the latest version first, then follow the IMEI repair guide. Do not skip the reflash.
the latest version failed with a flash error	Try the next older version instead and double-check your AP/BL/CP/CSC file assignments in Odin before assuming the firmware is the problem.
Restoring to factory / warranty repair	the latest version, clean state, fresh start.

To tell which Samsung firmware is newer, look at the last 4 characters of the PDA version string (e.g. S938BXXU9CZDP). The first character is the year (A=2024, B=2025, C=2026), the second is the month (A=Jan, B=Feb… L=Dec, Z=final stable), and the last two are the revision (0-9 then A-Z, where Z is highest). But before comparing dates, always check the binary level: the digit just before the date code (e.g. XXU9CZDP = Binary 9). You cannot downgrade to a lower binary level. If your device is on Binary 9, only flash Binary 9 or higher. Also make sure the 3-letter CSC code in the firmware matches your device region.

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Download Samsung Galaxy S II LTE I9210 GT-I9210 Firmware

Download the official stock firmware for your Samsung Galaxy S II LTE I9210 GT-I9210 below. The latest available version is the latest version. 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: I9210DXLE1_I9210OXXLE1_SIN.zip Size: 349 MB	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 Samsung Galaxy S II LTE I9210 GT-I9210 (GT-I9210) should not be confused with other Galaxy S II LTE I9210 variants that may have different chipsets or regional firmware. Even devices in the same Galaxy S II LTE I9210 line can use completely different processors. Always verify your exact model code “GT-I9210” in Settings > About Phone before downloading any firmware from this page.

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Prerequisites for Samsung Galaxy S II LTE I9210 GT-I9210 Firmware

Go through this list before you open Odin for the Samsung Galaxy S II LTE I9210 GT-I9210. Two things that commonly cause problems with Samsung devices: a Samsung account that was not signed out before flashing, which can trigger KG lock, and a USB cable that works for charging but drops the connection mid-flash. Always use a proper data cable, not a charge-only cable.

1. 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.
2. 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.
3. Remove Samsung Accounts: Sign out of all Samsung accounts to avoid KG lock.
4. 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.
5. 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.
6. 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.
7. Install the Right Drivers:
   • Samsung USB Drivers

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Samsung Galaxy S II LTE I9210 GT-I9210 Firmware Installation Guide

We are using Odin for this. A quick tip: keep “Auto Reboot” and “F. Reset Time” both checked in Odin, those two options together give you the cleanest flash result. If you are not sure which Odin version to use, check our Odin versions page. Some older Samsung devices work better with older Odin builds.

1. 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.
2. Verify Your Drivers:
   • Make sure the required drivers are installed. After installing, restart your PC, drivers often do not activate until after a reboot.
3. Load the Firmware File:
   • In Odin, click “BL” and select the BL_*.tar.md5 file. Click “AP” and select the AP_*.tar.md5 file. Repeat for “CP” and “CSC”. Use HOME_CSC to keep data, or CSC for a clean flash.
4. Connect Your Device:
   • Enter Download Mode: Turn off your phone, then hold Volume Down + Power (add Home button on older models) until the warning screen appears. Press Volume Up to confirm and enter Download Mode.
   • Connect your phone to your PC via USB. Odin should show “Added..” in the log area, this means your device is detected.
5. 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.
6. 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

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Common Issues When Flashing Samsung Galaxy S II LTE I9210 GT-I9210

1. Odin Shows “FAIL” Instead of “PASS”:
   • This is usually a mismatch between the firmware region or model and your device. Confirm your exact model number in Settings › About Phone before selecting the firmware. Even a single letter difference in the model code matters.
2. Samsung Galaxy S II LTE I9210 GT-I9210 Not Recognized by Odin:
   • Reinstall the Samsung USB drivers. Make sure you are in Download Mode. Try a different USB cable, Odin can be sensitive to cable quality.
3. KG Lock / Knox Triggered After Flashing:
   • This happens when a Samsung account was still signed in before flashing, or when unofficial firmware was used. Always sign out of Samsung accounts before flashing. If KG lock is already active, a professional unlocking tool is generally needed.
4. Boot Loop After Flashing:
   • Enter recovery mode (Volume Up + Power) and perform a factory reset. This clears any leftover data from the previous firmware that may be causing the conflict.

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Normal Behavior After Installing Samsung Galaxy S II LTE I9210 GT-I9210 Firmware

Here is what is completely normal after a successful flash:

• How to know the flash was successful: Odin will show “PASS.” in green text at the top-left of the log area. If you see this, everything went fine.
• 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.
• 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.
• 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.
• 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.

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Missing IMEI or Corrupt Baseband on Samsung Galaxy S II LTE I9210 GT-I9210 After Flashing?

A missing IMEI on a Samsung device after flashing usually points to a corrupted EFS partition, this is the partition that stores your IMEI and carrier settings. Note that restoring an IMEI that is not your original number is illegal in most countries, so only do this if you are restoring the number the device had before you flashed. Tools like ChimeraTool or BFT can help with this. Check your local laws before proceeding.

Video Guide: How to repair IMEI

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Samsung Galaxy S II LTE I9210 GT-I9210 Firmware FAQ

Q1: Can I use a Mac or Linux computer for this?
A: Samsung firmware can be flashed using Heimdall on Linux or Mac, but the instructions on this page are written for Odin on Windows. If you only have a Mac, you may want to use a Windows virtual machine or Boot Camp for the most straightforward experience.

Q2: Is this firmware compatible with other Samsung models?
A: No. This firmware is built specifically for the Samsung Galaxy S II LTE I9210 GT-I9210 running on the Qualcomm APQ8060 Snapdragon S3 chipset. Even variants of the Galaxy S II LTE I9210 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: 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 Odin appears stuck, give it a few more minutes before assuming something went wrong.

Q4: What if the flash fails halfway through?
A: Do not panic and do not disconnect the phone. Close Odin, 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: My device is not detected by Odin. What should I do?
A: Start with the drivers, reinstall the Samsung 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.

Q6: Will flashing erase my data?
A: Yes, flashing with Odin restores the device to factory state, including Android 2.3 (Gingerbread), upgradable to 4.1 (Jelly Bean) 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: 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.

Q8: 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.

People Also Ask About Samsung Galaxy S II LTE I9210 GT-I9210

What chipset does the Samsung Galaxy S II LTE I9210 GT-I9210 use?
The Samsung Galaxy S II LTE I9210 GT-I9210 is powered by the Qualcomm APQ8060 Snapdragon S3, 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.

Can flashing firmware fix a bricked Samsung Galaxy S II LTE I9210 GT-I9210?
Yes. If your Samsung Galaxy S II LTE I9210 GT-I9210 is stuck on the logo, in a bootloop, or will not turn on, flashing the stock firmware with Odin can restore it to working condition. This is the standard repair method used by service centers for Samsung devices.

Will flashing firmware on Samsung Galaxy S II LTE I9210 GT-I9210 erase my data?
Yes. Flashing stock firmware on the Samsung Galaxy S II LTE I9210 GT-I9210 with Odin 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 Samsung Galaxy S II LTE I9210 GT-I9210?
The latest available Samsung Galaxy S II LTE I9210 GT-I9210 firmware on this page is version the latest version. This page has 1 firmware build available for download. Check the firmware details table above for file sizes and Android versions.

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Final Thoughts

You have just completed a clean firmware flash on your Samsung Galaxy S II LTE I9210 GT-I9210. The device should now be back at the setup wizard on a fresh the latest version build.

Questions, errors, or something not covered here? The comments section is open. Tell me exactly what happened and I will walk you through the fix.

If you found this useful, a quick share goes a long way, someone else with the same device is probably searching for this right now.

Browse all Samsung firmware downloads for more devices.

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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.