Last Updated: June 12, 2026
If your Samsung Galaxy S6 edge SM-G925K is struggling with software problems, installing the official firmware can often get it back on track. This article provides the necessary Samsung Galaxy S6 edge SM-G925K firmware files, essential drivers, the right tools, and step-by-step instructions to handle issues like bootloops, FRP locks, or general software glitches.
Device: Samsung Galaxy S6 edge SM-G925K | Chipset: Samsung Exynos 7 Octa 7420 | Flash Tool: Odin
Android: Android 5.0.2 (Lollipop), upgradable to 7.0 (Nougat), TouchWiz UI/Samsung Experience | File Type: .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin)
⚠ Warning: Flashing erases all data. Back up first.
Samsung Galaxy S6 edge SM-G925K Firmware (Flash File) Drivers, Tools & Guide
Flashing official firmware often resolves issues with the Samsung Galaxy S6 edge SM-G925K. Setting up a Samsung device with Odin is fairly straightforward once you understand the key steps. I have gathered everything needed here: the correct firmware file for the Samsung Galaxy S6 edge SM-G925K, the right Odin version, and a clear set of working instructions.
Before you begin, there is one crucial step: if your device has a Samsung account logged in, make sure to sign it out. Skipping this can trigger Knox security (KG lock) during or after flashing, which requires extra steps to fix. Also, Samsung firmware typically comes in a .tar.md5 format. After you extract the ZIP file, you should see individual files labeled AP_*, BL_*, CP_*, and CSC_* (or HOME_CSC_*). If your extracted files do not match this pattern, you might have the wrong package.
Your Samsung Galaxy S6 edge SM-G925K firmware comes packaged as a compressed ZIP file. You will need to download and extract it using a tool like WinRAR or 7-Zip. Once extracted, you should see files such as AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and CSC_*.tar.md5 (or HOME_CSC_*.tar.md5). If these specific files are not visible, it indicates you might have downloaded an incorrect firmware package for your device.
Please remember that installing stock firmware will erase all data on the device. This is by design, as a complete reset is necessary to properly address various software issues. These can include FRP locks, application malfunctions, sluggish performance, forgotten pattern locks, a device stuck on the logo or unresponsive, Wi-Fi and Bluetooth connectivity problems, excessive battery drain, and soft brick situations.
Hard Reset Samsung Galaxy S6 edge SM-G925K
To perform a factory reset on the Samsung Galaxy S6 edge SM-G925K without a computer, power off the device completely, then simultaneously hold Volume Up + Power (for older models with a physical Home button, use Volume Up + Home + Power) until the recovery menu appears. In the recovery menu, use the volume keys to navigate to “Wipe Data/Factory Reset” and confirm your selection with the Power button.
A hard reset effectively deletes all user data and restores the Samsung Galaxy S6 edge SM-G925K to its original factory settings. This procedure often resolves common software problems such as slow performance, unexpected app crashes, forgotten screen locks, and continuous boot loops. If the device’s issues continue after a factory reset, a complete firmware flash using Odin, as detailed in the subsequent sections, is the next step.
Samsung Galaxy S6 edge SM-G925K FRP Bypass
The quickest way to bypass FRP on a Samsung Galaxy S6 edge SM-G925K involves using a free Android apps launcher to gain access to device settings during the initial setup wizard. After performing a factory reset or a firmware flash, you might encounter a Google account lock, also known as FRP. Our free Android apps launcher offers the fastest method to get past this security measure. This is precisely why I always advise removing your Google account before any flashing procedure; it prevents this particular problem entirely.
Why Do We Need Samsung Galaxy S6 edge SM-G925K Firmware?
Official firmware is essential for resolving various software issues and maintaining optimal performance on Samsung devices such as the Samsung Galaxy S6 edge SM-G925K, which are typically flashed using Odin regardless of their internal chipset. Installing the correct firmware can address a range of problems:
- Unlock a device that has been locked or disabled due to software issues.
- Update your phone to the latest Android version officially supported for its model.
- Correct startup loops, address lagging performance, and fix freezing on your SM-G925K Galaxy S6 edge.
- Resolve failed OTA updates and issues related to excessive battery drain.
- Restore the original Samsung stock ROM to maintain your device’s warranty validity.
- Recover your device when it is only able to boot into recovery mode.
- Address KG lock or other Knox-related problems that arise from an incorrect or interrupted flash procedure on your device.
Discover more about the purpose of stock ROMs and how flashing them works.
Choosing the Right Firmware Version
Before initiating the flashing process, it is crucial to verify that you have obtained the correct firmware file for your Samsung Galaxy S6 edge SM-G925K, as using an incompatible version can lead to irreversible problems. Flashing the wrong firmware is a common mistake that can be difficult to recover from:
- Identify Your Exact Model Number: Navigate to Settings › About Phone and precisely note down your full model number (for example, SM-G925K). The letter suffix is critical; for instance, U/U1 typically indicates USA variants, W is for Canada, N for Korea, and B/F for International/Global models. Flashing firmware intended for a different variant can introduce significant issues.
- Match the CSC (Region): The three-letter region code found in the firmware filename must correspond to your device’s region. You can check your current CSC in Settings › About Phone › Software Information, or by looking at the Service Provider line when your device is in Download Mode. Common codes include XAA (US), BTU (UK), INS (India), and SER (Russia).
- Check the Binary Level: Examine the version string of your current firmware (e.g.,
XXU9BZDP). The single digit immediately following the letters indicates the binary level. You cannot downgrade to a lower binary level. Therefore, if your device is currently on Binary 9, you should only flash firmware with Binary 9 or a higher binary level. - Confirm the Build Date: The last four characters of the PDA version string provide details about the firmware’s build date. The first character represents the year (A=2024, B=2025, C=2026), and the second character denotes the month (A=January through L=December).
- Verify in Download Mode: Power off your device completely, then press and hold Volume Down + Power simultaneously to enter Download Mode. This essential screen will display your exact model number, CSC, and the current firmware version, allowing you to double-check compatibility before proceeding with the flash.
Firmware Details for Samsung Galaxy S6 edge SM-G925K
Here is a concise summary of the official firmware specifications for the Samsung Galaxy S6 edge SM-G925K:
| Firmware Information | Details |
|---|---|
| Device Model | Samsung Galaxy S6 edge SM-G925K |
| Firmware Version | KKU1AOF6 |
| File Size | 1.67 GB to 1.7 GB |
| Android Version | Android 5.0.2 (Lollipop), upgradable to 7.0 (Nougat), TouchWiz UI/Samsung Experience |
| Platform | Samsung Exynos 7 Octa 7420 |
| Release Date | Released 2015, April |
| Region | Global, Africa and Asia |
| File Type | .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin) |
Which Firmware Version Should I Download?
The most frequent inquiry I receive relates to firmware version selection, so I have compiled a straightforward table to guide you to the appropriate file based on your specific situation:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | KKU1AOF6, this is the latest Samsung Galaxy S6 edge SM-G925K firmware available. Download this version. |
| FRP / Google account lock only | Refer to the FRP bypass guide mentioned above; a full firmware flash is likely not necessary for this issue alone. |
| Not sure which region/CSC to download | Check your device’s current CSC under Settings › About Phone › Software Information, or enter Download Mode (Volume Down + Power) where the CSC will be displayed. Match the three-letter code (e.g., XAA, BTU, INS) with the firmware filename. |
| Phone runs slowly after a recent OTA update | Consider trying the next older version. Sometimes, the most recent OTA updates can introduce new bugs, and an earlier build might offer better performance. Ensure the binary level is equal to or higher than your device’s current level. |
| IMEI is missing after a previous flash attempt | First, re-flash KKU1AOF6, then follow the IMEI repair guide. Do not skip the reflash step. |
| KKU1AOF6 failed with a flash error | Instead, try the next older version. Double-check your AP/BL/CP/CSC file assignments in Odin before assuming the firmware itself is the cause of the problem. |
| Restoring to factory settings / warranty repair | Use KKU1AOF6 for a clean state and a fresh start. |
To determine which Samsung firmware is newer, examine the last four characters of the PDA version string (for example, S938BXXU9CZDP). The first character denotes the year (A=2024, B=2025, C=2026), the second indicates the month (A=January, B=February… L=December, Z=final stable release), and the final two characters represent the revision (ranging from 0-9 then A-Z, where Z signifies the highest revision). However, before comparing dates, it is essential to always check the binary level: this is the digit immediately preceding the date code (e.g., XXU9CZDP indicates Binary 9). You cannot downgrade to a lower binary level. If your device is currently on Binary 9, you must only flash firmware that is Binary 9 or higher. Furthermore, ensure that the three-letter CSC code found in the firmware file corresponds to your device’s specific region.
Download Samsung Galaxy S6 edge SM-G925K Firmware
You can download the official stock firmware for your Samsung Galaxy S6 edge SM-G925K here; the latest available release is KKU1AOF6. After completing the download, verify that the file size matches the specifications listed in the table above. A discrepancy in size often points to a partial or corrupted download, and attempting to flash a corrupted file can lead to more severe problems than the original issue.
| Software Details | Download Link | Members Link |
|---|---|---|
|
File Name: G925KKKU1AOF6_G925KRTC1AOF6_KTC.zip Size: 1.7 GB | Download Link | Download Link2 |
| File Name: NRD90M.G925IDVU4FRH2 Size: 1.67 GB | Download Link | Download Link2 |
Only download firmware that is fully compatible with your exact device model. Refer to the firmware selection guide above if you are not sure.
- Your model number is a variant of SM-G925K with a different letter suffix. Check About Phone carefully, one letter difference can cause a failed or broken flash.
- Your chipset differs from Samsung Exynos 7 Octa 7420. 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 Samsung Galaxy S6 edge SM-G925K Firmware
Before you proceed with opening Odin for your Samsung Galaxy S6 edge SM-G925K, it is important to review this checklist to prevent common flashing issues. Two frequent culprits for problems with Samsung devices are not signing out of a Samsung account before flashing, which can trigger a KG lock, and using a USB cable that only charges but drops the data connection during the flash. Always ensure you are using a reliable data cable, not just a charging cable.
- Back Up IMEI Numbers: Immediately dial *#06# and carefully record both of your IMEI numbers. These will be necessary if you ever need to restore your IMEI after the flashing process.
- Remove Google Accounts: Sign out of all Google accounts present on the device to prevent activation of the FRP lock after the firmware installation.
- Remove Samsung Accounts: Ensure all Samsung accounts are signed out from the device to avoid encountering a KG lock during or after flashing.
- Back Up Your Data: Create a full backup of all your data, including photos, contacts, WhatsApp chats, and any other important files. Flashing the firmware will completely wipe the device.
- Charge Your Device: Make sure your device has at least a 50% battery charge. A device that loses power during a firmware flash can become extremely difficult to recover.
- USB Cable & PC: Use a high-quality data USB cable, not a charge-only cable, and a Windows computer with readily available USB ports.
- Install Required Drivers:
- Install the Samsung USB Drivers.
How to Install Firmware on Samsung Galaxy S6 edge SM-G925K
We will be using Odin for this procedure to install the firmware on your Samsung Galaxy S6 edge SM-G925K. A useful tip: keep both “Auto Reboot” and “F. Reset Time” checked in Odin; these two options combined generally provide the cleanest flashing result. If you are uncertain about which Odin version to use, please consult our Odin versions page, as some older Samsung devices tend to work better with specific older Odin builds.
- Download and Extract:
- Download the appropriate firmware package from the links provided earlier on this page.
- Extract the contents of the ZIP file into a simple folder path; avoid using paths that contain spaces or special characters, as some flash tools may encounter issues with them.
- Install the Listed Drivers:
- Confirm that all drivers mentioned above are installed on your computer and that your PC has been restarted since their installation. Forgetting to restart is a common reason drivers do not function correctly.
- Load the Firmware File:
- Within the Odin application, click on the “BL” button and select the
BL_*.tar.md5file. Proceed to click “AP” and choose theAP_*.tar.md5file. Repeat this step for “CP” and “CSC”. You should use theHOME_CSCfile if you wish to retain your user data, or the regularCSCfile for a complete clean flash that wipes all data.
- Within the Odin application, click on the “BL” button and select the
- Connect Your Device:
- Enter Download Mode: Power off your phone completely, then press and hold Volume Down + Power simultaneously (on older models, also include the Home button) until the warning screen appears. Press Volume Up to confirm and proceed into Download Mode.
- Connect your phone to your PC using a USB cable. Odin should display “Added..” in its log area, confirming that your device has been successfully detected.
- Start Flashing:
- Click the “Start” button in Odin to initiate the flashing process.
- It is crucial not to disconnect the device, move the USB cable, or interact with the phone until the entire process has successfully completed. Interrupting the flash mid-way is a common cause of device bricking.
- Wait and Reboot:
- Once the flashing process successfully concludes, you may disconnect the device from your computer.
- Power on your device. The initial boot-up will take considerably longer than usual; allow it up to eight minutes to fully start.
Video Guide for Flashing
What to Expect After Flashing Samsung Galaxy S6 edge SM-G925K Firmware
Many people worry that something has gone wrong after a firmware flash when it is actually a normal part of the process; here is what to anticipate after a successful Samsung Galaxy S6 edge SM-G925K firmware installation:
- Confirmation of Successful Flash: Odin will display a “PASS.” message in green text at the top-left section of the log area. Seeing this indicates that the process completed without issues.
- Extended First Boot Time: The device’s first boot-up will take approximately three to eight minutes; avoid forcing a reboot. The operating system is configuring itself from scratch during this time, and interrupting it can lead to bootloop problems.
- Device Warmth During Initial Boot: It is normal for the phone to feel warm during its first boot. The temperature will stabilize after a few minutes once the initial application setup is finished.
- All Applications Removed: All your installed applications will be gone, which is the expected outcome. You can reinstall them from the Play Store. If you had a Google account backup enabled, the setup wizard should offer to restore your applications automatically.
- Immediate IMEI Check: After completing the setup, dial *#06# right away to verify your IMEI. Do this before inserting a SIM card. If it shows “unknown” or “null,” proceed with the IMEI repair guide below before taking any other action.
- Careful Google Account Re-addition: Exercise caution when re-adding your Google account. If you did not remove it prior to flashing, you might encounter an FRP prompt. Add your Google account freshly during the initial setup wizard, rather than later through the Settings menu.
- Functionality of Wireless Connections: Wi-Fi, Bluetooth, and mobile data should all work correctly immediately after setup. If mobile data does not connect, navigate to Settings › SIM and Network and manually re-enter your APN details; sometimes, flashing clears carrier APN configurations.
- Persistent Bootloop After First Boot: If your device remains in 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 usually does not mean the firmware is incorrect; it is typically a conflict with residual data from the previous installation.
- Samsung Smart Switch Prompts: After installing your Samsung Galaxy S6 edge SM-G925K firmware, Samsung Smart Switch might prompt you to download and install additional updates. Allow these updates to complete; this helps ensure your device has the most current security patches for your region.
Missing IMEI or Corrupt Baseband on Samsung Galaxy S6 edge SM-G925K After Flashing?
When a Samsung device displays a missing IMEI after a firmware flash, it typically indicates a corrupted EFS partition. This partition is where your IMEI and essential carrier settings are stored. It is important to remember that restoring an IMEI number that does not match your device’s original number is illegal in most regions. Therefore, only proceed with this if you are restoring the exact IMEI that the device had before you performed the flash. Specialized tools such as ChimeraTool or BFT can assist with this process. Always consult your local laws before attempting any IMEI repair.
Video Guide: How to repair IMEI
Common Issues When Flashing Samsung Galaxy S6 edge SM-G925K
- Odin Displays “FAIL” Instead of “PASS”:
- This error typically indicates a discrepancy between the firmware’s region or model and your actual device. Always confirm your exact model number under Settings › About Phone before selecting firmware. Even a single letter difference in the model code can lead to problems.
- Samsung Galaxy S6 edge SM-G925K Not Recognized by Odin:
- Begin by reinstalling the Samsung USB drivers. Ensure your device is correctly in Download Mode. If the issue persists, try using a different USB cable, as Odin can sometimes be particular about cable quality.
- KG Lock / Knox Triggered After Flashing:
- This security measure activates if 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 prior to any flashing procedure. If KG lock is already active, a specialized professional unlocking tool is generally required to resolve it.
- Boot Loop After Flashing:
- If your device enters a continuous boot loop, access recovery mode (by holding Volume Up + Power) and perform a factory reset from there. This action clears any leftover data from the previous firmware that might be causing software conflicts.
Frequently Asked Questions
Q1: Will flashing the Samsung Galaxy S6 edge SM-G925K firmware erase my data?
A: Yes, flashing this firmware using Odin will reset your device to its factory state, including Android 5.0.2 (Lollipop), upgradable to 7.0 (Nougat), TouchWiz UI/Samsung Experience default settings. All your installed applications, photos, contacts, and logged-in accounts will be removed. It is essential to back up all necessary data before starting, as there is no method to recover data once the flashing process is complete.
Q2: Is this firmware compatible with other Samsung models?
A: No, this firmware is specifically engineered for the Samsung Galaxy S6 edge SM-G925K, which operates on the Samsung Exynos 7 Octa 7420 chipset. Even other Galaxy S6 edge variants with a different letter suffix (e.g., SM-G925F) may contain an entirely different internal chipset. Attempting to flash incompatible firmware can render your phone unusable and create recovery challenges. Always confirm your precise model number in Settings › About Phone before proceeding.
Q3: Can I downgrade from KKU1AOF6 to an older firmware version?
A: While it is technically feasible on some Exynos builds, I generally do not advise downgrading. Rolling back to an older firmware can introduce security vulnerabilities and cause application compatibility issues, especially when moving from Android 5.0.2 (Lollipop), upgradable to 7.0 (Nougat), TouchWiz UI/Samsung Experience. If KKU1AOF6 is causing problems, please leave a comment below with details; there is often a more effective solution 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 S6 edge SM-G925K after flashing, it means a Google account was still active on the device before the flash. The recommended solution is to utilize our free Android apps launcher. As I always recommend, signing out of your Google account prior to flashing prevents this issue altogether.
Q5: Are custom ROM options available for the Samsung Galaxy S6 edge SM-G925K?
A: This guide specifically addresses official Samsung stock firmware. The availability of custom ROMs for the Samsung Galaxy S6 edge SM-G925K largely depends on whether the Samsung Exynos 7 Octa 7420 chipset has open-source kernel support within the developer community. For information on custom ROMs, you should check our dedicated Custom ROMs page or explore device-specific threads on the XDA Developers forum.
Q6: My Samsung Galaxy S6 edge SM-G925K is not detected by Odin. What should I do?
A: First, focus on the drivers: reinstall the Samsung USB drivers, then restart your PC, and attempt connection again. If you are using a USB 3.0 port, try switching to a USB 2.0 port, as Samsung devices sometimes connect more reliably there. Temporarily disable your antivirus software. If these steps do not resolve the issue, please leave a comment below with the precise error message, and I will assist you further.
Q7: How do I enter recovery mode on my Samsung Galaxy S6 edge SM-G925K?
A: To enter recovery mode, power the device off completely. Then, press and hold Volume Up + Power simultaneously until the recovery menu appears on the screen. For older Samsung models that feature a physical Home button, the correct combination is Volume Up + Home + Power. The recovery menu will also display the build number for your Samsung Galaxy S6 edge SM-G925K, which can be useful for verifying your current firmware version before flashing.
Q8: My IMEI shows “unknown” after flashing the Samsung Galaxy S6 edge SM-G925K. Is my phone permanently damaged?
A: No, this situation is alarming but generally fixable. You should follow the IMEI repair guide located in the troubleshooting section above. For Samsung devices, it is crucial to first check for corruption of the EFS partition. Importantly, 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 S6 edge SM-G925K firmware?
A: The actual firmware flashing process typically lasts between three and ten minutes, depending on the size of the firmware file and the speed of your USB connection. The first boot after flashing, however, takes longer, anywhere from three to eight minutes. It is vital not to interrupt the device during either of these stages. If the progress bar in Odin appears stuck, allow it a few more minutes before concluding that something has gone wrong.
Final Thoughts on Samsung Galaxy S6 edge SM-G925K Firmware
This guide covers everything necessary to safely install the official Samsung Galaxy S6 edge SM-G925K firmware (KKU1AOF6) using Odin and restore your device’s functionality. If you followed each step carefully, your phone should now be operating on a clean build.
If something did not go as expected, perhaps a specific error message, a step that is not working for your particular setup, please leave a comment below. Include as much detail as you can: the exact error, which step you were on, and what you have already tried. I make sure to read every comment and will help you work through any issues.
If this guide proved helpful to you, please consider sharing it. It is the best way to assist others who might be experiencing the same problem.
Browse all Samsung 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.
