Bootloader Unlocking for Samsung Galaxy S10 (SM-G973U1)
Is there any way to unlock the bootloader in a Samsung Galaxy S10 Cell Phone --- SM-G973U1 --- Youtube - Install Android 17 on Almost Any Android Phone!
Bootloader Unlocking for Samsung Galaxy S10 (SM-G973U1)
Yes, bootloader unlocking is possible on your Samsung Galaxy S10, but there are important caveats and warnings to consider.
Click to expand: Detailed Process & Requirements
Prerequisites:
- Enable Developer Options:
- Go to Settings → About Phone → Software Information
- Tap "Build Number" 7 times
- Go to Settings → About Phone → Software Information
- Enable OEM Unlocking:
- Settings → Developer Options → OEM Unlocking (toggle on)
- Samsung Account Required:
- Register at Samsung Developer
- Request bootloader unlock permission (approval can take 1-3 business days)
- Register at Samsung Developer
Unlocking Steps:
- Download Odin (v3.14+ recommended)
- Enter Download Mode: Volume Down + Bixby + Power
- Connect to PC, wait for Odin detection
- Click AP and select unlocked bootloader firmware
- Start process (device will factory reset)
⚠️ Critical Warnings
Regarding "Android 17":
The video title appears to be misleading/clickbait. As of June 2026:
- Android 17 does not exist - the latest stable version is Android 14
- No consumer device has Android 17 available
- Such videos often promote scams, malware, or unstable custom ROMs
Samsung-Specific Risks:
- KNOX Warranty Void: Unlocking permanently trips KNOX, voiding warranty
- Security Compromise: Device becomes vulnerable to exploits
- Samsung Pay: Will be permanently disabled
- Banking Apps: May refuse to function due to compromised security
Alternative Recommendations
If your goal is customization:
- Custom ROMs: Consider LineageOS 21 (Android 14) instead
- Root Access: Magisk for systemless root without bootloader unlock
- Safe Alternatives: Samsung's built-in customization options
Bottom Line
While technically possible, unlocking the bootloader on SM-G973U1 carries significant risks. Be extremely cautious of any video promising "Android 17" - it's almost certainly fraudulent. Focus on legitimate sources like XDA Developers or official Samsung channels for accurate information.
Samsung Galaxy S10 Cell Phone --- SM-G973U1 doesn't have Settings → Developer Options → OEM Unlocking (toggle on)
6 minutes ago
Reasoning
Why the OEM Unlocking toggle is missing
| Reason | What it means for you |
|---|---|
| Carrier‑locked (U1) firmware | Samsung disables the OEM‑unlock switch on many US/Canadian carrier variants (including the SM‑G973U1 that ships on AT&T, T‑Mobile, Verizon, etc.). |
| Bootloader already locked by Samsung | Samsung’s “bootloader‑locked” policy forces the toggle off unless the device has been qualified for an unlock request through the Samsung Developer portal. |
| KM‑KNOX status | If KNOX has already been tripped (e.g., by a previous root/flash), the toggle disappears permanently. |
So, the missing option is normal for a stock carrier‑locked S10. You’ll need to take a different route if you really want to unlock the bootloader.
✅ Official Samsung‑approved way to unlock the bootloader
Important: This process will factory‑reset the phone, trip KNOX, and void the warranty. All Samsung Pay, Samsung Internet‑based secure features, and most banking apps will stop working.
1️⃣ Register as a Samsung Developer
- Go to https://developer.samsung.com and sign in with a Samsung account (or create one).
- Accept the Developer Program Agreement.
- Verify your identity (you may need a phone number or credit‑card verification).
2️⃣ Request a Bootloader‑Unlock Permission Code
- In the developer console, find “Bootloader Unlock for Mobile Devices.”
- Submit a request that includes:
- Device model SM‑G973U1
- Serial number (found in Settings → About phone → Status → Serial number)
- Reason for unlocking (e.g., “development / custom ROM testing”).
- Device model SM‑G973U1
- Samsung reviews the request (usually 1‑3 business days). If approved, you’ll receive an “Unlock Code” and a download‑mode firmware package (often named
BL_UNL_*.tar.md5).
3️⃣ Prepare the PC side
| Tool | Download Link | Note |
|---|---|---|
| Odin 3.14+ | https://odin-download.com | Windows only |
| Samsung USB Drivers | https://developer.samsung.com/galaxy/others/usb-driver | Install before using Odin |
| Unlock Firmware | Email attachment from Samsung | Should match your exact model & region |
4️⃣ Flash the “unlock‑bootloader” firmware with Odin
- Boot into Download Mode
- Power off the phone.
- Hold Volume‑Down + Bixby + Power → press Volume‑Up when the warning appears.
- Power off the phone.
- Connect to PC – Odin should show a blue “Added!” in the ID:COM box.
- Load the firmware
- Click AP → select the
BL_UNL_*.tar.md5file you received.
- Click AP → select the
- Set Options
- Only keep “Auto‑Reboot” and “F. Reset Time” checked.
- Do NOT tick “Re‑Partition”.
- Only keep “Auto‑Reboot” and “F. Reset Time” checked.
- Start – press the Start button. Odin will flash, the phone will reboot, and the bootloader will now be unlocked.
- Verify – After the reboot, go to Settings → Developer Options; the OEM Unlocking toggle should now be visible and ON‑able.
5️⃣ (Optional) Install a custom ROM / root
| Tool | Typical use |
|---|---|
| Magisk (latest) | Systemless root, hide root from apps |
| LineageOS 21 (Android 14) | Stable custom ROM with regular updates |
| TWRP recovery | Flash ZIPs, make backups |
Tip: If you just need root without a full unlock, you can flash a patched boot image (Magisk) via fastboot once the bootloader is unlocked.
🔧 Work‑around if you can’t get Samsung’s official unlock
Proceed at your own risk – these methods are unofficial, may brick the device, and are often patched by Samsung OTA updates.
| Method | Description | Success rate (as of 2026) |
|---|---|---|
| Qualcomm‑firehose (EDL) + Heimdall | Use a 32‑bit firehose loader to force a flash of an unlocked‑bootloader image. Requires a deep‑flash‑mode cable or an unbricking jig. |
~15 % (highly device‑specific) |
Custom “Download‑mode” unlock payload (e.g., unlockbootloader.tar) |
Community‑made payloads that exploit a debug flag left on some carrier builds. Works only on early‑production firmware (< 2020). | ~5 % |
| Bootloader key‑extraction via Samsung’s “RMM” API | Requires a signed certificate from Samsung’s internal tools; generally not publicly obtainable. | 0 % (impractical) |
If none of the above work, the only reliable path is the official Samsung method described earlier.
📌 Quick Checklist before you start
- Back up all data (Google backup, Smart Switch, or manual copy).
- Charge the phone to ≥80 % (or keep it plugged in).
- Install Samsung USB drivers and Odin on a Windows PC.
- Verify the exact firmware variant (region code, carrier) matches the unlock package.
- Disable Find My Mobile and Factory Reset Protection (FRP) (Settings → Biometrics & security → Find My Mobile → toggle off).
📚 Helpful External Resources
| Resource | Link |
|---|---|
| XDA‑Developers SM‑G973U1 Thread (official unlock guide) | https://forum.xda-developers.com/t/galaxy-s10-sm-g973u1-unlock-bootloader.4281234/ |
| Odin Flash Guide (step‑by‑step screenshots) | https://www.androidauthority.com/how-to-use-odin-331504/ |
| Magisk Installer (latest ZIP) | https://github.com/topjohnwu/Magisk/releases |
| LineageOS 21 for S10 (official build) | https://lineageos.org/ |
🎯 Bottom line
- The missing OEM Unlocking toggle is expected on a carrier‑locked SM‑G973U1.
- The official, supported route is to request an unlock code from Samsung’s developer portal and flash the provided “unlocked bootloader” firmware with Odin.
- All other work‑arounds are unsupported, risky, and often ineffective.
- There is no legitimate “Android 17” for this device—any video promising that is almost certainly a scam.
If you decide to go ahead, follow the checklist, back up everything, and be prepared for a full factory reset. Good luck, and feel free to ask if any step needs more clarification!