Last Updated: June 14, 2026
Looking to restore your Samsung Galaxy Tab S 10.5 SM-T800 to its original glory? This page has all the essential files and clear instructions for flashing official Samsung Galaxy Tab S 10.5 SM-T800 firmware, whether you need to perform a hard reset, address an FRP lock, or fix other software issues. It is all here: the exact flash files, necessary tools, drivers, and a detailed guide.
Device: Samsung Galaxy Tab S 10.5 SM-T800 | Chipset: Samsung Exynos 5 Octa 5420 | Flash Tool: Odin
Android: Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow) with TouchWiz UI | File Type: .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin)
⚠ Warning: Flashing erases all data. Back up first.
Samsung Galaxy Tab S 10.5 SM-T800 Firmware (Flash File) Drivers, Tools & Guide
Flashing firmware on a Samsung device using Odin is quite straightforward when you have all the correct pieces in place. I have organized everything you need right here: the right Samsung Galaxy Tab S 10.5 SM-T800 firmware, the compatible Odin version, and a reliable step-by-step flashing process.
Before you dive in, make sure to sign out of any Samsung accounts if one is active on your device. Skipping this step can trigger a KG lock, and sorting that out after flashing adds extra complexity. Also, Samsung firmware files typically arrive in a .tar.md5 format inside a ZIP archive. After you extract the ZIP, you should see files labeled AP_*, BL_*, CP_*, and CSC_* (or HOME_CSC_*). If your extracted files do not look like this, you might have an incorrect package.
The Samsung Galaxy Tab S 10.5 SM-T800 firmware download is a compressed ZIP file. You will need to extract it using a program like WinRAR or 7-Zip. Once extracted, you should find files such as AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and CSC_*.tar.md5 (or HOME_CSC_*.tar.md5). If these files are not present, it indicates you might have downloaded the wrong firmware package for your tablet.
Remember that installing official stock firmware will erase all data on your device. This data wipe is actually essential, as it helps resolve a wide range of software issues. These problems can include FRP locks, application errors, slow performance, forgotten screen locks, devices stuck on the logo or failing to boot, Wi-Fi and Bluetooth glitches, excessive battery drain, and soft brick situations.
Hard Reset Samsung Galaxy Tab S 10.5 SM-T800
To hard reset your Samsung Galaxy Tab S 10.5 SM-T800 without a computer, power off the device completely, then simultaneously press and hold Volume Up + Power until the recovery menu appears. If your tablet has a physical Home button, you would use Volume Up + Home + Power. Once in the recovery menu, use the volume keys to navigate to “Wipe Data/Factory Reset” and confirm your selection with the Power button.
Performing a hard reset clears all user data and returns your Samsung Galaxy Tab S 10.5 SM-T800 to its default factory settings. This often fixes most common software problems, such as sluggish performance, app crashes, forgotten screen locks, and bootloop scenarios. If the problem continues even after a factory reset, a complete firmware flash with Odin is the next step, as detailed in the sections that follow.
Samsung Galaxy Tab S 10.5 SM-T800 FRP Bypass
The quickest method to bypass FRP on a Samsung Galaxy Tab S 10.5 SM-T800 involves using a free Android apps launcher that provides access to the tablet’s settings during the initial setup wizard. After a flash or factory reset, you might encounter a Google account lock, also known as FRP. Our free Android apps launcher provides a quick way around this. This is precisely why I always advise removing your Google account before flashing, as it prevents this issue entirely.
Why Do We Need Samsung Galaxy Tab S 10.5 SM-T800 Firmware?
Samsung devices, including the Samsung Galaxy Tab S 10.5 SM-T800, use Odin for flashing, regardless of whether they have an Exynos or Snapdragon chipset. Flashing the official stock firmware can fix many problems, from boot issues to general software glitches:
- Unlock your tablet if it has become disabled or locked.
- Update to the newest Android version supported by your specific model.
- Fix recurring startup loops, lagging, and freezing on your SM-T800 Galaxy Tab S 10.5.
- Resolve problems with failed OTA updates and issues causing battery drain.
- Restore the genuine Samsung stock ROM to maintain warranty validity.
- Get your device working again when it is stuck booting only into recovery mode.
- Recover from KG lock or Knox-related problems that appear after a bad or interrupted flash on your device.
To understand more, check out our article explaining stock ROMs and why flashing them works.
Choosing the Right Firmware Version
Before you start the flashing process, it is essential to confirm you have the correct file. Flashing incompatible firmware is a common mistake that is difficult to fix:
- Identify Your Exact Model Number: Navigate to Settings › About Phone and precisely note down your full model number (e.g. SM-T800). Pay close attention to any letter suffixes, as they often denote different variants (U/U1 for USA, W for Canada, N for Korea, B/F for International/Global). Flashing firmware made for a different variant will likely cause issues.
- Match the CSC (Region): The three-letter region code in the firmware filename needs to match your device. You can find your current CSC by going to Settings › About Phone › Software Information, or by looking at the Service Provider line when in Download Mode. Common codes include XAA (US), BTU (UK), INS (India), and SER (Russia).
- Check the Binary Level: Examine the version string in your tablet’s current firmware (for example,
XXU9BZDP, the number directly following the letters indicates the binary level). It is critical to understand that you cannot downgrade to a lower binary level. If your device is currently on Binary 9, you must only flash Binary 9 firmware or a higher version. - Confirm the Build Date: The last four characters of the PDA version string encode the build date. The first character represents the year (A for 2024, B for 2025, C for 2026), and the second character indicates the month (A for January through L for December).
- Verify in Download Mode: Turn off your device, then hold Volume Down + Power to enter Download Mode. This screen provides crucial details about your exact model, CSC, and current firmware version, which you should use to double-check everything before proceeding with the flash.
Firmware Details for Samsung Galaxy Tab S 10.5 SM-T800
Here is a concise overview of the official Samsung Galaxy Tab S 10.5 SM-T800 firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Samsung Galaxy Tab S 10.5 SM-T800 |
| Firmware Version | T800XXU1CRJ1 |
| File Size | 1.9 GB |
| Android Version | Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow) with TouchWiz UI |
| Platform | Samsung Exynos 5 Octa 5420 |
| Release Date | Released 2014, July |
| Region | Global, Africa and Asia |
| File Type | .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin) |
Which Firmware Version Should I Download?
This is a common question, so I have created a straightforward guide below. Just find your specific situation in the table to quickly determine the right Samsung Galaxy Tab S 10.5 SM-T800 firmware file to download:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | T800XXU1CRJ1, this is the latest Samsung Galaxy Tab S 10.5 SM-T800 firmware available, so download it. |
| FRP / Google account lock only | Refer to the FRP bypass guide above; you probably do not need a full firmware flash for this. |
| Not sure which region/CSC to download | Check Settings › About Phone › Software Information for your tablet’s current CSC, or enter Download Mode (Volume Down + Power), the CSC code will be displayed there. Match this three-letter code (e.g. XAA, BTU, INS) with the firmware filename. |
| Phone slow after a recent OTA update | Consider trying the next older version; sometimes the newest OTA can introduce new bugs, and an earlier build might perform better. Ensure the binary level is equal to or higher than your device’s current one. |
| IMEI missing after a previous flash | First, re-flash T800XXU1CRJ1, then follow the IMEI repair guide. Do not skip the initial reflash. |
| T800XXU1CRJ1 failed with a flash error | Try the next older version instead, and carefully double-check your AP/BL/CP/CSC file assignments in Odin before assuming the firmware itself is the issue. |
| Restoring to factory / warranty repair | T800XXU1CRJ1, this will provide a clean slate and a fresh start for your device. |
To determine which Samsung firmware is newer, look at the last four characters of the PDA version string (e.g. S938BXXU9CZDP). The first character denotes the year (A for 2024, B for 2025, C for 2026), the second represents the month (A for January, B for February… L for December, with Z typically indicating a final stable release), and the last two characters signify the revision (ranging from 0-9 then A-Z, where Z is the highest). However, before comparing dates, always check the binary level: this is the digit located just before the date code (e.g. XXU9CZDP means Binary 9). You absolutely cannot downgrade to a lower binary level. If your device is on Binary 9, you must only flash firmware that is Binary 9 or higher. Always ensure the three-letter CSC code in the firmware matches your device’s region.
Download Samsung Galaxy Tab S 10.5 SM-T800 Firmware
You can download the official stock Samsung Galaxy Tab S 10.5 SM-T800 firmware below. The most current available version is T800XXU1CRJ1. After downloading, it is a good practice to verify that the file size matches what is listed in the table above. A size mismatch usually indicates a partial or corrupted download, and flashing a corrupted file can often create more problems than it solves.
| Software Details | Download Link | Members Link |
|---|---|---|
|
File Name: Samsung_SM-T800_T800XXU1CRJ1_T800BTU1CRJ1_BTU_6.0.1_3file.zip Size: 1.9 GB | Download Link | Download Link2 |
Please only download firmware that is fully compatible with your exact device model. If you are unsure, consult the firmware selection guide above.
- Your model number is a variant of SM-T800 with a different letter suffix. Carefully check About Phone, even a single letter difference in the model code can lead to a failed or bricked flash.
- Your tablet’s chipset differs from Samsung Exynos 5 Octa 5420. Verify this in recovery mode before proceeding.
- You obtained the file from any source other than this specific page.
- The file size varies significantly from the sizes listed in the table above, a size mismatch usually means a partial download, which will inevitably fail mid-flash.
Prerequisites for Samsung Galaxy Tab S 10.5 SM-T800 Firmware
Before you even open Odin for your Samsung Galaxy Tab S 10.5 SM-T800, review this checklist. Two frequent culprits for issues with Samsung devices are a Samsung account that was not signed out before flashing, which can trigger a KG lock, and a USB cable that works for charging but loses connection during the flash. Always use a proper data transfer cable, not one that is only for charging.
- Back Up IMEI Numbers: Dial *#06# right now and write down both IMEI numbers. You will need these if you ever have to restore your IMEI after the flashing process.
- Remove Google Accounts: Sign out of all Google accounts on the device to prevent an FRP lock from activating after the firmware flash.
- Remove Samsung Accounts: Sign out of all Samsung accounts to avoid triggering a KG lock.
- Back Up Your Data: Ensure you back up everything important, including photos, contacts, WhatsApp chats, and any crucial files. Flashing will completely wipe the device.
- Charge Your Device: Your tablet should have at least 50% battery charge. A device that loses power during a flash can become very difficult to recover.
- USB Cable & PC: Use a high-quality data USB cable (not a charge-only cable) and a Windows computer with easily accessible USB ports.
- Install Required Drivers:
- Make sure the Samsung USB Drivers are installed.
How to Install Firmware on Samsung Galaxy Tab S 10.5 SM-T800
We will be using Odin for this procedure. A helpful tip: always keep “Auto Reboot” and “F. Reset Time” checked in Odin. These two settings combined typically provide the cleanest flash result. If you are uncertain about which Odin version to use, you can refer to our Odin versions page, as some older Samsung devices might work better with older Odin builds.
- Download and Extract:
- Obtain the correct Samsung Galaxy Tab S 10.5 SM-T800 firmware package from the download links provided above.
- Extract the ZIP file to a simple folder path, avoiding spaces or special characters in the path, as some flash tools may struggle with these.
- Install the Listed Drivers:
- Confirm that all drivers mentioned above are installed and that your computer has been restarted since their installation. Forgetting to restart is a frequent reason why drivers do not function correctly.
- Load the Firmware File:
- In the Odin tool, click the “BL” button and select the BL_*.tar.md5 file. Then, click “AP” and choose the AP_*.tar.md5 file. Repeat this process for “CP” and “CSC.” Use HOME_CSC if you wish to retain user data, or select CSC for a complete, clean flash.
- Connect Your Device:
- Enter Download Mode: Power off your tablet, then hold Volume Down + Power simultaneously (if it is an older model with a Home button, add the Home button to the combination) until the warning screen appears. Press Volume Up to confirm and proceed into Download Mode.
- Connect your tablet to your PC using a USB cable. Odin should display “Added..” in its log area, indicating your device is recognized.
- Start Flashing:
- Click the “Start” button in Odin to begin the flashing process.
- It is crucial not to disconnect, move the USB cable, or touch the device until the entire process is successfully completed. Interrupting the flash midway can result in a bricked device.
- Wait and Reboot:
- Once the flashing finishes successfully, you can disconnect the device.
- Power on your tablet. The initial boot will take longer than usual, allow it up to eight minutes to fully start up.
Video Guide for Flashing
What to Expect After Flashing Samsung Galaxy Tab S 10.5 SM-T800 Firmware
Many users worry that something has gone wrong after flashing, even when everything is perfectly normal. Here is what is completely expected after a successful Samsung Galaxy Tab S 10.5 SM-T800 firmware flash:
- How to know the flash was successful: Odin will display “PASS.” in green text at the top-left of its log window. If you see this, your flash was successful.
- First boot takes 3 to 8 minutes, please do not force-reboot the device during this time. The operating system is configuring itself from scratch. Interrupting this phase is a common cause of bootloops.
- The tablet will feel warm during its first boot, this is normal. The temperature will stabilize after a few minutes once the initial application setup is finished.
- All your applications will be gone, this is the expected outcome. You will need to reinstall them from the Play Store. If you had an active Google account backup, it will offer to restore your apps automatically during the setup process.
- Immediately dial *#06# after setup to check your IMEI. Do this before inserting a SIM card. If it displays “unknown” or “null,” follow the IMEI repair guide below before proceeding with anything else.
- Be careful when re-adding your Google account, if you did not remove it before flashing, you might encounter an FRP prompt. Add it freshly during the initial setup wizard, rather than later through the Settings menu.
- Wi-Fi, Bluetooth, and mobile data should all function correctly right after setup. If mobile data is not connecting, go to Settings › SIM and Network and manually re-enter your APN details. The flash sometimes clears carrier-specific APN settings.
- Stuck in a bootloop after the first boot? Enter recovery mode and perform a factory reset from there, refer to the hard reset guide above. This can happen occasionally and does not necessarily mean the firmware is incorrect; it is usually a conflict with residual data from the previous installation.
- Samsung Smart Switch: After flashing your Samsung Galaxy Tab S 10.5 SM-T800 firmware, Samsung Smart Switch might prompt you to install additional updates. Allow these to complete, as this ensures your device receives the latest security patches for your region.
Missing IMEI or Corrupt Baseband on Samsung Galaxy Tab S 10.5 SM-T800 After Flashing?
A missing IMEI on a Samsung device after flashing typically indicates a corrupted EFS partition. This partition is where your IMEI and carrier-specific settings are stored. Please note that restoring an IMEI that is not the original number for your device is illegal in most countries. Therefore, only proceed with this if you are restoring the number the device had before you flashed. Tools such as ChimeraTool or BFT can assist with this process. Always check your local laws before attempting any IMEI repair.
Video Guide: How to repair IMEI
Common Issues When Flashing Samsung Galaxy Tab S 10.5 SM-T800
- Odin Shows “FAIL” Instead of “PASS”:
- This often indicates a mismatch between the firmware’s region or model and your actual device. Verify your exact model number in Settings › About Phone before selecting the firmware. Even a single letter difference in the model code can cause a failure.
- Samsung Galaxy Tab S 10.5 SM-T800 Not Recognized by Odin:
- Reinstall the Samsung USB drivers. Make sure your tablet is properly in Download Mode. Try a different USB cable, Odin can be quite particular about cable quality.
- KG Lock / Knox Triggered After Flashing:
- This situation typically occurs when a Samsung account was still signed in on the device before flashing, or if unofficial firmware was used. Always sign out of all Samsung accounts before starting a flash. If KG lock is already active, resolving it usually requires a professional unlocking tool.
- Boot Loop After Flashing:
- Enter recovery mode (Volume Up + Power) and perform a factory reset from there. This action clears any old data from the previous firmware that might be conflicting with the new installation, often resolving the boot loop.
Frequently Asked Questions
Q1: Will flashing the Samsung Galaxy Tab S 10.5 SM-T800 firmware erase my data?
A: Yes, flashing this firmware using Odin will reset your device to its factory default state. This includes returning it to Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow) with TouchWiz UI settings. All applications, photos, contacts, and linked accounts will be removed. It is crucial to back up everything you need before starting, as data cannot be recovered once the flash is complete.
Q2: Is this firmware compatible with other Samsung models?
A: No, this firmware is specifically designed for the Samsung Galaxy Tab S 10.5 SM-T800 model, which runs on the Samsung Exynos 5 Octa 5420 chipset. Even another Galaxy Tab S 10.5 with a slightly different letter suffix (denoting a variant of SM-T800) might contain a completely different chipset internally. Flashing incorrect firmware can render your device in a state that is very challenging to recover from. Always confirm your exact model number in Settings › About Phone.
Q3: Can I downgrade from T800XXU1CRJ1 to an older firmware version?
A: While it is sometimes technically possible on certain Exynos builds, I generally advise against it. Downgrading can introduce security vulnerabilities and application compatibility problems, especially on older Android versions like 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow) with TouchWiz UI. If T800XXU1CRJ1 is causing you issues, please leave a comment below; there is usually a more effective solution than rolling back.
Q4: What should I do if I encounter an FRP lock after flashing?
A: You should use our free Android apps launcher. The FRP lock on the Samsung Galaxy Tab S 10.5 SM-T800 activates if a Google account was still logged in before the flashing process. This is precisely why I consistently recommend logging out of your Google account beforehand, as it helps you avoid this problem entirely.
Q5: Are custom ROM options available for the Samsung Galaxy Tab S 10.5 SM-T800?
A: This guide focuses exclusively on official Samsung stock firmware. The availability of custom ROMs for the Samsung Galaxy Tab S 10.5 SM-T800 depends on whether the Samsung Exynos 5 Octa 5420 chipset has sufficient open-source kernel support. For more information, please check our Custom ROMs page or explore the XDA Developers forum for device-specific custom ROM threads.
Q6: My Samsung Galaxy Tab S 10.5 SM-T800 is not detected by Odin. What should I do?
A: Begin by reinstalling the Samsung USB drivers and then restarting your PC, then try connecting again. If you are using a USB 3.0 port, try switching to a USB 2.0 port instead, as Samsung devices often connect more reliably there. Temporarily disable your antivirus software. If these steps do not work, please leave a comment below with the exact error message, and I will assist you further.
Q7: How do I enter recovery mode on my Samsung Galaxy Tab S 10.5 SM-T800?
A: To enter recovery mode, first power off the device completely. Then, press and hold Volume Up + Power simultaneously until the recovery menu appears. For older Samsung models that feature a physical Home button, you would use the combination of Volume Up + Home + Power. The recovery menu will display the build number for your Samsung Galaxy Tab S 10.5 SM-T800, which can be useful for verifying your firmware version before flashing.
Q8: My IMEI shows “unknown” after flashing the Samsung Galaxy Tab S 10.5 SM-T800. Is my phone permanently damaged?
A: No, while it appears alarming, this issue is generally fixable. You should follow the IMEI repair guide located in the troubleshooting section above. For Samsung devices, it is important to first check for potential EFS partition corruption. The critical point is: do not insert a SIM card until the IMEI has been successfully restored.
Q9: How long does it take to flash Samsung Galaxy Tab S 10.5 SM-T800 firmware?
A: The actual flashing process typically takes between 3 and 10 minutes, depending on the size of the firmware and the speed of your USB connection. The very first boot after flashing will take longer, anywhere from 3 to 8 minutes. It is important not to interrupt the device during either of these stages. If the progress bar in Odin appears stationary, allow a few more minutes before assuming something has gone wrong.
Final Thoughts on Samsung Galaxy Tab S 10.5 SM-T800 Firmware
This covers all the information you need to safely flash the official Samsung Galaxy Tab S 10.5 SM-T800 firmware (T800XXU1CRJ1) using Odin and get your tablet running smoothly again. If you have followed each step carefully, your device should now be operating on a clean build.
If anything did not go as planned, perhaps a specific error, or a step that did not work with your setup, please leave a comment below with as much detail as you can provide. Include the exact error message, which step you were on, and what you have already tried. I review every comment and will do my best to help you work through it.
If this guide proved helpful, please consider sharing it. It is one of the best ways to assist others who might be facing the same issues.
You can also browse all Samsung firmware downloads for other devices.
Disclaimer: Flashing stock firmware is performed at your own risk. Please 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.
