Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware

Last Updated: June 14, 2026

For your SM-G906K Galaxy S5 LTE-A G906S, this page provides the official Samsung Galaxy S5 LTE-A G906S SM-G906K firmware. It includes everything necessary to resolve software problems, such as guides for hard resets, FRP bypass procedures, essential flash files, IMEI repair tools, drivers, and detailed installation steps.

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Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware (Flash File) Drivers, Tools & Guide

This section details how to manage and install the Samsung Galaxy S5 LTE-A G906S SM-G906K firmware, providing all necessary files, tools, and instructions for a successful update or repair. Installing Samsung firmware using Odin is a manageable process, provided you are aware of the key steps. This guide consolidates all necessary components: the appropriate firmware for the Samsung Galaxy S5 LTE-A G906S SM-G906K, the correct Odin version, and proven installation procedures.

Before starting the flashing process, an important step is to sign out of any Samsung accounts present on your device. Skipping this can trigger Knox security features, potentially leading to a KG lock that requires additional time to resolve after flashing. The Samsung Galaxy S5 LTE-A G906S SM-G906K firmware is provided as a compressed ZIP archive. After downloading it, extract the contents using WinRAR or 7-Zip. You should then find files structured as AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and either CSC_*.tar.md5 or HOME_CSC_*.tar.md5. If these files are not visible, it suggests that the incorrect firmware package has been downloaded for your specific device.

It is important to remember that installing stock firmware will erase all data on your device. This complete reset is by design, as it helps address various software problems such as FRP locks, application malfunctions, sluggish performance, forgotten screen patterns, devices stuck on the logo or failing to boot, connectivity issues with Wi-Fi and Bluetooth, excessive battery consumption, and soft brick scenarios.

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Hard Reset Samsung Galaxy S5 LTE-A G906S SM-G906K

To perform a hard reset on the Samsung Galaxy S5 LTE-A G906S SM-G906K without a computer, power off the device, then press and hold Volume Up + Power simultaneously until the recovery menu loads; for models with a physical Home button, include the Home button in this key combination. Use the volume keys to navigate to “Wipe Data/Factory Reset” and confirm with the Power button.

Executing a hard reset will erase all personal data and revert the Samsung Galaxy S5 LTE-A G906S SM-G906K to its initial factory settings. This procedure commonly resolves many software-related problems, including sluggish operation, frequent application crashes, forgotten screen locks, and bootloop situations. If the problem continues after a factory reset, the subsequent sections describe how to perform a complete firmware flash with Odin.

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Samsung Galaxy S5 LTE-A G906S SM-G906K FRP Bypass

The fastest method to bypass FRP on the Samsung Galaxy S5 LTE-A G906S SM-G906K involves using a free Android apps launcher, which grants access to device settings during the initial setup wizard. After a factory reset or a firmware flash, you might encounter a Google account lock, also known as FRP. Our free Android apps launcher is the quickest way to get past it. It is always advisable to remove your Google account before flashing to prevent this issue from occurring.

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Why Do We Need Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware?

Official firmware flashing for Samsung devices, including the Samsung Galaxy S5 LTE-A G906S SM-G906K, is done via Odin, regardless of the internal chipset, and can resolve various software issues:

• Regain access to your device if it has become locked or disabled.
• Apply the most recent Android operating system updates available for your phone.
• Address continuous startup loops, persistent lag, and freezing issues on your SM-G906K Galaxy S5 LTE-A G906S.
• Correct problems with Over-The-Air (OTA) update installations and reduce excessive battery drain.
• Revert to the original Samsung stock ROM, which helps maintain warranty eligibility.
• Rescue your device if it is only able to boot into recovery mode.
• Resolve KG lock or other Knox-related problems that may arise from an improper or interrupted firmware flash on your device.

Learn more about stock ROMs and why flashing works.

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Choosing the Right Firmware Version

Before initiating the flashing process, it is critical to confirm that you have selected the correct firmware file, as flashing an incompatible version can lead to significant device problems:

1. Identify Your Exact Model Number: Access Settings › About Phone to accurately determine your full model number (e.g., SM-G906K). The letter suffix is crucial; for example, U/U1 typically indicates USA variants, W for Canada, N for Korea, and B/F for International/Global models. Flashing firmware intended for a different variant often causes operational problems.
2. Match the CSC (Region): Verify that the three-letter region code in the firmware filename corresponds to your device’s current CSC. This can be found under Settings › About Phone › Software Information or by checking the Service Provider line while in Download Mode. Common codes include XAA (US), BTU (UK), INS (India), and SER (Russia).
3. Check the Binary Level: Examine the version string of your current firmware (e.g., XXU9BZDP); the numerical digit following the letters represents the binary level. It is not possible to downgrade to a lower binary level. Therefore, if your device is currently on Binary 9, you must only flash firmware that is Binary 9 or higher.
4. Confirm the Build Date: The last four characters of the PDA version provide the build date information: the first character denotes the year (A=2024, B=2025, C=2026), and the second indicates the month (A=January through L=December). The last two characters typically represent the revision.
5. Verify in Download Mode: To confirm these details before flashing, power off your device and then hold Volume Down + Power to enter Download Mode. This screen will display your precise model, CSC, and the current firmware version.

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Firmware Details for Samsung Galaxy S5 LTE-A G906S SM-G906K

Below is a summary of the official firmware specifications for the Samsung Galaxy S5 LTE-A G906S SM-G906K:

Firmware Information	Details
Device Model	Samsung Galaxy S5 LTE-A G906S SM-G906K
Firmware Version	KTU1CPL1
File Size	1.5 GB
Android Version	Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow), TouchWiz UI
Platform	Qualcomm APQ8084 Snapdragon 805
Release Date	Released 2014, July
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?

To simplify the selection process, this guide addresses frequently asked scenarios, directing you to the appropriate firmware version. Below is a list of common situations to help you determine the correct file:

Your Situation	What I Recommend
Phone is completely dead or stuck on logo	KTU1CPL1, this is the latest Samsung Galaxy S5 LTE-A G906S SM-G906K firmware available, recommended for restoring devices that are unresponsive or stuck at the boot logo.
FRP / Google account lock only	Refer to the FRP bypass guide above; a full firmware flash is likely not required for this specific issue.
Not sure which region/CSC to download	Check Settings › About Phone › Software Information for your current CSC code, or enter Download Mode (Volume Down + Power) where the CSC is displayed on screen. Match this three-letter code (e.g., XAA, BTU, INS) with the firmware filename.
Phone slow after a recent OTA update	Consider downloading the next older version. Sometimes, a recent Over-The-Air (OTA) update can introduce performance issues, and an earlier build might offer better stability. Ensure the binary level is equivalent to or higher than your device’s current binary.
IMEI missing after a previous flash	First, re-flash KTU1CPL1, and then proceed to follow the IMEI repair guide. Do not skip the initial reflash.
KTU1CPL1 failed with a flash error	Attempt to use the next older version. Also, meticulously verify that your AP, BL, CP, and CSC files are correctly assigned in Odin before concluding that the firmware itself is the issue.
Restoring to factory / warranty repair	KTU1CPL1, for a clean slate and a fresh start, this version is appropriate.

To determine which Samsung firmware version is more recent, examine the last four characters of the PDA version string (for example, S938BXXU9CZDP). The initial character signifies the year (with A=2024, B=2025, C=2026), the second character denotes the month (A=January, B=February… L=December, with Z indicating a final stable release), and the last two characters represent the revision (ranging from 0-9 then A-Z, where Z is the highest). However, prior to comparing dates, it is essential to verify the binary level, which is the digit immediately preceding the date code (e.g., XXU9CZDP means Binary 9). Downgrading to a lower binary level is not supported. Therefore, if your device is running on Binary 9, only firmware with Binary 9 or higher should be flashed. Furthermore, ensure that the three-letter CSC code within the firmware matches your device’s regional specification.

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Download Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware

The official stock firmware for your Samsung Galaxy S5 LTE-A G906S SM-G906K is available for download below, with KTU1CPL1 being the latest version. After downloading, confirm that the file size corresponds to what is listed in the table above. A discrepancy in size often indicates a partial or corrupted download, and attempting to flash such a file can introduce further issues rather than resolving existing ones.

Software Details	Download Link	Members Link
File Name: G906KKTU1CPL1_G906KKTC1CPL1_KTC.zip Size: 1.5 GB	Download Link	Download Link2

Only download firmware that is fully compatible with your exact device model. Review the firmware selection guide above if you are uncertain.

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Prerequisites for Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware

Before proceeding with Odin for the Samsung Galaxy S5 LTE-A G906S SM-G906K, it is essential to complete several prerequisite steps. It is important to review this list thoroughly. Two frequent sources of issues with Samsung devices involve an active Samsung account that was not logged out prior to flashing, which can activate KG lock, and the use of a USB cable suitable for charging but prone to disconnecting during the flash process. Always opt for a genuine data transfer cable over a charge-only one.

1. Back Up IMEI Numbers: Dial *#06# to retrieve and record both IMEI numbers. These will be necessary if you ever need to restore your IMEI after a firmware flash.
2. Remove Google Accounts: Ensure all Google accounts are signed out to prevent FRP lock from activating after the flashing procedure.
3. Remove Samsung Accounts: Sign out of any active Samsung accounts to avoid triggering a KG lock.
4. Back Up Your Data: Create a backup of all personal data, including photos, contacts, chat histories, and critical files. Flashing will completely wipe the device.
5. Charge Your Device: Ensure your device has at least a 50% battery charge. A power interruption during the flashing process can make device recovery very difficult.
6. USB Cable & PC: Utilize a reliable USB data cable, distinct from a charge-only cable, and a Windows computer equipped with available USB ports.
7. Install Required Drivers:
   • Install the necessary Samsung USB Drivers. A computer restart after driver installation is often required for them to function correctly.

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How to Install Firmware on Samsung Galaxy S5 LTE-A G906S SM-G906K

Installing firmware on the Samsung Galaxy S5 LTE-A G906S SM-G906K is performed using Odin, with specific settings recommended for optimal results. For this procedure, we will use Odin. A helpful tip for a clean flash result is to ensure that both “Auto Reboot” and “F. Reset Time” options remain checked within Odin. If you are uncertain about which Odin version to utilize, refer to our dedicated Odin versions page, as certain older Samsung devices tend to perform better with earlier Odin builds.

1. Download and Extract:
   • Obtain the correct firmware package from the provided download links.
   • Extract the ZIP archive into a simple directory path, avoiding spaces or special characters, as some flash tools may encounter issues with such paths.
2. Install the Listed Drivers:
   • Confirm that all drivers mentioned earlier are properly installed and that your personal computer has been restarted since their installation. Overlooking the restart is a frequent cause of driver malfunction.
3. Load the Firmware File:
   • Within Odin, click the “BL” button and select the corresponding BL_*.tar.md5 file. Proceed to 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 CSC for a complete factory wipe.
4. Connect Your Device:
   • Enter Download Mode: Power off your phone, then simultaneously press and hold Volume Down + Power. For older models, include the Home button in this combination until the warning screen appears. Press Volume Up to confirm entry into Download Mode.
   • Connect your phone to your personal computer using the USB cable. Odin should display “Added..” in its log area, indicating successful device detection.
5. Start Flashing:
   • Click the “Start” button to initiate the flashing process.
   • It is crucial not to disconnect, move the cable, or interact with the device until the entire process is completed. Interrupting the flash mid-way often results in a bricked device.
6. Wait and Reboot:
   • Once the flashing successfully concludes, disconnect your device.
   • Power on your device. The initial boot will take longer than usual; allow up to eight minutes for it to complete.

Video Guide for Flashing

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What to Expect After Flashing Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware

After a successful Samsung Galaxy S5 LTE-A G906S SM-G906K firmware flash, several common behaviors are completely normal. Many users frequently express concerns that an error occurred, when in fact, the device is behaving as expected. Below is a list of completely normal observations following a successful Samsung Galaxy S5 LTE-A G906S SM-G906K firmware flash:

• How to know the flash was successful: Odin will display “PASS.” in green text at the top-left of the log window. Observing this confirms that the process completed without issues.
• First boot takes 3 to 8 minutes, do not attempt to force-reboot the device. The operating system is performing its initial setup from scratch. Interrupting this stage is a common cause of devices becoming stuck in bootloops.
• The phone will feel warm during first boot, this thermal increase is normal. The temperature will stabilize after a few minutes once the initial application setup processes are finished.
• All your apps are gone, this outcome is anticipated. You will need to reinstall applications from the Play Store. If a Google account backup was active, the setup wizard will usually offer to restore your applications automatically.
• Dial *#06# immediately after setup to check your IMEI numbers before inserting a SIM card. If “unknown” or “null” is displayed, proceed immediately with the IMEI repair guide below before performing any other actions.
• Be careful when re-adding your Google account, if you did not remove your Google account before flashing, you might encounter an FRP prompt. Add your account during the initial setup wizard rather than later through the device’s Settings.
• Wi-Fi, Bluetooth, and mobile data should all function correctly immediately after setup. If mobile data fails to connect, navigate to Settings › SIM and Network and manually re-enter your APN settings, as a flash can sometimes clear carrier-specific APN configurations.
• Stuck in a bootloop after first boot? If your device enters a bootloop after the initial startup, enter recovery mode and perform a factory reset from there; refer to the hard reset guide above. This can occur occasionally and does not necessarily indicate incorrect firmware; it is usually due to residual data conflicts from the previous installation.

• Samsung Smart Switch: After flashing your Samsung Galaxy S5 LTE-A G906S SM-G906K firmware, Samsung Smart Switch might suggest installing additional updates. Allow these updates to complete, as they ensure your device has the most current security patches for your region.

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Missing IMEI or Corrupt Baseband on Samsung Galaxy S5 LTE-A G906S SM-G906K After Flashing?

A missing IMEI after flashing a Samsung device typically indicates a corrupted EFS partition, which is responsible for storing IMEI and carrier settings. The absence of an IMEI on a Samsung device following a firmware flash often signals corruption within the EFS partition, which is where your device’s unique IMEI and carrier configurations are stored. It is important to remember that replacing an IMEI with a number that is not original to the device is unlawful in many jurisdictions; therefore, this procedure should only be undertaken to restore the IMEI that existed on the device prior to flashing. Specialized tools such as ChimeraTool or BFT can assist with this repair. Always consult your local laws before proceeding.

Video Guide: How to repair IMEI

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Common Issues When Flashing Samsung Galaxy S5 LTE-A G906S SM-G906K

1. Odin Shows “FAIL” Instead of “PASS”:
   • This error commonly occurs due to an incompatibility between the firmware’s region or model and your device. Before selecting firmware, always confirm your precise model number in Settings › About Phone, as even a single letter difference in the model code is critical.
2. Samsung Galaxy S5 LTE-A G906S SM-G906K Not Recognized by Odin:
   • Reinstall the Samsung USB drivers and ensure your device is properly in Download Mode. Attempt using a different USB cable, as Odin can be sensitive to cable quality and connectivity. If the issue persists, consider trying a different USB port on your computer.
3. KG Lock / Knox Triggered After Flashing:
   • This security measure activates if a Samsung account was not signed out before the flashing process or if unofficial firmware was used. Always sign out of all Samsung accounts prior to flashing. If KG lock has already been activated, a specialized unlocking tool is typically required to resolve it.
4. Boot Loop After Flashing:
   • If your device enters a boot loop, boot into recovery mode (Volume Up + Power) and perform a factory reset. This action clears any residual data from the previous firmware that might be causing a conflict and preventing proper startup.

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Frequently Asked Questions

Q1: Will flashing the Samsung Galaxy S5 LTE-A G906S SM-G906K firmware erase my data?
A: Yes, flashing this firmware using Odin will reset your device to its factory state, including the default Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow), TouchWiz UI settings. All your applications, photos, contacts, and linked accounts will be deleted. It is essential to back up all important data before beginning the process, as data recovery is not possible once the flash is completed.

Q2: Is this firmware compatible with other Samsung models?
A: No, this specific firmware is exclusively designed for the Samsung Galaxy S5 LTE-A G906S SM-G906K, which features the Qualcomm APQ8084 Snapdragon 805 chipset. Even other variants of the Galaxy S5 LTE-A G906S with a slightly different model suffix might contain an entirely different chipset. Attempting to flash incorrect firmware can render your phone in a difficult-to-recover state. Always confirm your exact model number by checking Settings › About Phone.

Q3: Can I downgrade from KTU1CPL1 to an older firmware version?
A: While technically feasible on some Qualcomm-based builds, downgrading is not recommended. It can introduce security vulnerabilities and cause application compatibility issues on Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow), TouchWiz UI. If you are experiencing problems with KTU1CPL1, please leave a comment; often, a better solution exists than reverting to an older version.

Q4: What should I do if I encounter an FRP lock after flashing?
A: If you encounter an FRP lock on your Samsung Galaxy S5 LTE-A G906S SM-G906K after flashing, use our free Android apps launcher. This issue arises when a Google account remains signed in on the device before flashing. To prevent this problem entirely, it is always best practice to sign out of your Google account beforehand.

Q5: Are custom ROM options available for the Samsung Galaxy S5 LTE-A G906S SM-G906K?
A: This guide focuses exclusively on official Samsung stock firmware. The availability of custom ROMs for the Samsung Galaxy S5 LTE-A G906S SM-G906K depends on community development and whether the Qualcomm APQ8084 Snapdragon 805 chipset has adequate open-source kernel support. For custom ROM discussions specific to this device, consult our Custom ROMs page or the XDA Developers forum.

Q6: My Samsung Galaxy S5 LTE-A G906S SM-G906K is not detected by Odin. What should I do?
A: First, reinstall the Samsung USB drivers and restart your PC, then attempt connection again. If you are using a USB 3.0 port, try switching to a USB 2.0 port, as Samsung devices often show greater reliability with USB 2.0 connections. Temporarily disable any antivirus software. If these steps do not resolve the issue, provide the exact error message in a comment below for further assistance.

Q7: How do I enter recovery mode on my Samsung Galaxy S5 LTE-A G906S SM-G906K?
A: To access recovery mode, ensure your device is powered off completely. Then, press and hold Volume Up + Power simultaneously until the recovery menu appears. For older Samsung models that include a physical Home button, the combination is Volume Up + Home + Power. The recovery menu will display the build number of your Samsung Galaxy S5 LTE-A G906S SM-G906K, which can be useful for verifying your firmware version before flashing.

Q8: My IMEI shows “unknown” after flashing the Samsung Galaxy S5 LTE-A G906S SM-G906K. Is my phone permanently damaged?
A: No, while concerning, this issue is generally repairable. Refer to the IMEI repair guide located in the troubleshooting section above. For Samsung devices, it is important to first check for corruption of the EFS partition. Critically, do not insert a SIM card into the device until the IMEI has been successfully restored.

Q9: How long does it take to flash Samsung Galaxy S5 LTE-A G906S SM-G906K firmware?
A: The actual flashing process typically lasts between 3 and 10 minutes, varying based on the firmware size and the speed of your USB connection. The initial boot after flashing requires more time, usually ranging from 3 to 8 minutes. It is crucial not to interrupt the device during either of these stages. If the progress bar in Odin appears to be stuck, allow a few additional minutes before concluding that an error has occurred.

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Final Thoughts on Samsung Galaxy S5 LTE-A G906S SM-G906K Firmware

This guide has provided all the necessary steps to safely flash the official Samsung Galaxy S5 LTE-A G906S SM-G906K firmware (KTU1CPL1) using Odin, aiming to restore your device’s functionality. If you followed each instruction, your phone should now be operating with a clean firmware installation.

Should any unexpected issues arise, such as a specific error message, a step that does not function for your particular setup, please leave a comment below. Include as much detail as possible: the precise error, the step you were attempting, and any troubleshooting you have already performed. I review all comments and will assist you in finding a resolution.

If this guide proved helpful, please consider sharing it. This is the most effective way to support others facing similar device issues.

For additional devices, explore all Samsung firmware downloads available.

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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.