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- What is KG Lock?
- Tools You Will Need
- Warning Before You Start
- Step 1: Check Your Device Information
- Step 2: Set Up Your Computer
- Step 3: Back Up Your Data
- Step 4: Enter EDL Mode
- Step 5: Use TSM Tool to Prepare Device
- Step 6: Generate QR Code
- Step 7: Boot to Download Mode
- Step 8: Flash Combination Firmware
- Step 9: Remove KG Lock with QR Code
- Step 10: Verify KG Lock Removal
- Step 11: Flash Stock Firmware
- Step 12: Set Up Your Phone
- Common Problems and Solutions
- Phone Won’t Enter EDL Mode
- TSM Tool Can’t Connect to Phone
- QR Code Not Working
- KG Lock Still There After Process
- Conclusion
- Frequently Asked Questions
The Samsung Galaxy S24 Ultra (model SM-S928B) is a premium flagship smartphone. Sometimes, users face KG Lock issues that limit the device’s functions. This guide will show you how to remove KG Lock using the EDL+QR CODE Method with TSM Tool. This method works for devices with Bit4 security and December 2024 security patch.
What is KG Lock?
KG Lock (Knox Guard) is Samsung’s security system for business devices. When active, it can block many features and prevent normal use. If you bought a used phone or your company forgot to remove KG Lock, you need to remove it to use your phone fully.
Tools You Will Need
Tools needed for the KG Lock removal process
Get these items ready before you start:
- Windows PC (Windows 10 or 11)
- USB data cable (original Samsung cable is best)
- Samsung USB drivers
- TSM Tool (latest version)
- EDL cable or test point tools
- QR Code generator
- Combination firmware for SM-S928B
- Stock firmware for SM-S928B
- Internet connection
- Backup software (if possible)
Warning Before You Start
READ THIS FIRST:
- This process will delete ALL data on your phone
- This may void your warranty
- There is a risk of damaging your phone if done wrong
- Back up your data if possible
- Follow all steps exactly
- Use at your own risk
- This guide is for legal phone owners only
Step 1: Check Your Device Information

First, make sure you have the right device:
- Go to Settings > About phone
- Check these details:
- Model number: SM-S928B
- Android version: 14
- Security patch: December 1, 2024
- Bit status: Bit 4
Step 2: Set Up Your Computer
- Install Samsung USB drivers on your PC
- Download and install TSM Tool
- Download combination firmware for SM-S928B
- Download stock firmware for your region
- Turn off antivirus software for now
- Make a folder to keep all files organized
Step 3: Back Up Your Data
If you can access your phone:
- Save photos, contacts, and files to cloud storage
- Export messages using Samsung Smart Switch
- Write down important passwords
Step 4: Enter EDL Mode
Device entering EDL mode
- Turn off your Samsung Galaxy S24 Ultra
- Get your EDL cable or test point tools ready
- For EDL cable: Connect the EDL cable to your phone and PC
- For test points: Open the phone carefully and find the test points
- Short the test points while connecting the USB cable
- The phone should enter EDL mode (screen will be black)
Step 5: Use TSM Tool to Prepare Device
TSM Tool software interface
- Open TSM Tool on your PC
- Select “Samsung” from the brand menu
- Choose “S24 Ultra SM-S928B” from the model list
- Click on “EDL Mode” tab
- Make sure your device is connected in EDL mode
- Click “Read Info” to verify connection
- Select “Prepare for KG Unlock” option
- Click “Start” and wait for the process to finish
- The tool will prepare your device for QR code method
Step 6: Generate QR Code
QR Code generation in TSM Tool
- In TSM Tool, go to “QR Generator” tab
- Enter these details:
- Model: SM-S928B
- Binary: Bit4
- Android version: 14
- Security patch: 2024-12-01
- Click “Generate QR Code”
- Save the QR code image to your PC
Step 7: Boot to Download Mode
Samsung device in Download Mode
- Disconnect your phone from PC
- Press and hold Volume Down + Volume Up buttons
- While holding these buttons, connect USB cable to PC
- When warning screen appears, press Volume Up to continue
- Your phone should now be in Download Mode
Step 8: Flash Combination Firmware
Flashing combination firmware using TSM Tool
- In TSM Tool, go to “Flash” tab
- Click “Load Combination” and select your combination firmware
- Make sure all firmware files are correctly loaded
- Check “Auto Reboot” option
- Click “Flash” and wait for the process to complete
- When successful, the phone will reboot
Step 9: Remove KG Lock with QR Code
Scanning QR code to remove KG Lock
- After phone boots with combination firmware, go to dialer
- Enter code: #0#
- This opens the service menu
- Select “QR Code Scanner” option
- Show the QR code from your PC screen to the phone camera
- Hold steady until the phone scans the code
- You will see a message that KG Lock is removed
- Restart your phone
Step 10: Verify KG Lock Removal
- After restart, check if KG Lock messages are gone
- Try using features that were blocked before
- If KG Lock is gone, continue to next step
- If KG Lock is still there, try scanning the QR code again
Step 11: Flash Stock Firmware
Flashing stock firmware to restore normal operation
- Boot your phone to Download Mode again
- In TSM Tool, go to “Flash” tab
- Click “Load Stock” and select your stock firmware
- Make sure all firmware files are correctly loaded
- Check “Auto Reboot” option
- Click “Flash” and wait for the process to complete
- When successful, the phone will reboot to normal mode
Step 12: Set Up Your Phone
Setting up phone after successful KG Lock removal
- When the phone boots up, you will see the setup screen
- Follow the on-screen steps to set up your phone
- Sign in with your Google and Samsung accounts
- Restore your backups if you have them
- Check that all features work correctly
Common Problems and Solutions
Phone Won’t Enter EDL Mode
- Try different USB ports or cables
- Make sure battery is at least 50% charged
- Check that you have the right EDL cable or test points
- Install correct drivers
TSM Tool Can’t Connect to Phone
- Reinstall Samsung USB drivers
- Try a different USB port
- Close other programs that might use the USB port
- Restart your PC and try again
QR Code Not Working
- Make your PC screen brighter
- Make sure QR code is clear and big enough
- Clean the phone camera
- Generate a new QR code
- Try printing the QR code if screen scanning fails
KG Lock Still There After Process
- Make sure you used the right combination firmware
- Check that the QR code had the correct information
- Try the whole process again
- The phone might have extra security measures
Conclusion
Removing KG Lock from your Samsung Galaxy S24 Ultra SM-S928B using the EDL+QR CODE Method with TSM Tool takes some technical skill. This guide gives you the steps to follow, but be careful and take your time with each step.
Remember that this process will erase all data on your phone. If you don’t feel comfortable doing this yourself, ask a professional phone repair service for help.
![Unlocked Phone]
Successfully unlocked Samsung Galaxy S24 Ultra
Frequently Asked Questions
Q: Will this method work on other Samsung models?
A: This guide is made for Samsung Galaxy S24 Ultra SM-S928B. Other models need different steps.
Q: Is this process legal?
A: This process is for legal phone owners. Using it on phones you don’t own may break laws.
Q: Will my phone get updates after this process?
A: Yes, your phone should still get official updates after you flash the stock firmware.
Q: Can I get my data back after this process?
A: No, this process erases all data. Always back up before starting.
Q: How long does this take?
A: The whole process usually takes 1-2 hours, depending on your experience and if any problems come up.
Q: Will this remove Google account lock (FRP) too?
A: This method is for KG Lock only. FRP removal needs a different process.
Q: Will Samsung Pay work after this?
A: Some security features like Samsung Pay might not work after this process because it affects the KNOX security system.