With the rollout of One UI 8 (based on Android 16), Samsung has removed the “OEM Unlocking” toggle from Developer Options on all Galaxy devices—not only in the U.S., but internationally. This affects major models like the Galaxy S25, S25 Ultra, Z Flip 7, and Z Fold 7, where the bootloader unlock switch has disappeared even in beta builds.
What It Means for Users
- No Bootloader Unlock Access: Enthusiasts can no longer unlock bootloaders via settings to root phones or install custom ROMs.
- Automatic Re-locking: Devices that were already unlocked may be automatically relocked during the One UI 8 update—including Galaxy S23 Ultra and S22 Ultra.
- Manufacturing Access Only: While Samsung retains internal capability to unlock devices in exceptional cases, regular users lose all direct access.
Background & Technology Context
Unlocking the bootloader has historically allowed advanced users to install custom firmware or gain root access. However, Samsung’s security stack—Knox Verified Boot—uses hardware e‑fuses and prevents custom OS loading after unlocking, permanently disabling some trusted features like Samsung Pay and Secure Folder once tripped.
Previously, non‑U.S. Galaxy phones offered OEM Unlocking via Developer Options, especially Exynos‑based global variants. In the U.S., Snapdragon-based models have been shipping with the toggle missing for years.
Community Reaction
Reddit users and custom ROM developers express concern over the loss of freedom:
“Over time more and more companies and carriers are blocking bootloader unlock… we will lose the ability to unlock bootloader completely.”
Another user commented:
“U.S. models can’t have bootloader unlocked… OEM Unlock has been removed from firmware/device.”
These reactions reflect growing frustration with the industry’s increasing lock-down of access for power users.
Quick Overview
| Aspect | Details |
|---|---|
| Affected Update | One UI 8 (Android 16) |
| User Option Removed | “OEM Unlocking” toggle from Developer Options |
| Models Impacted | Flagship and mid-range: Galaxy S25 series, Z Fold 7/Flip 7, etc. |
| Regions Affected | Global—previously only U.S. devices were restricted |
| On Previously Unlocked Phones | Bootloader can be re-locked on update |
| Samsung Internal Unlock Only | Only Samsung retains access, user cannot unlock manually |
Why This Matters
- Loss of Device Customization: Power users who customize firmware, install kernels, or root their devices will be unable to do so on updated or new Samsung phones.
- Security vs. Freedom Trade-off: While Samsung may argue this is to enhance security or meet carrier demands, critics see it as a rollback of user autonomy.
- Trend Across Manufacturers: Samsung isn’t alone—brands like Xiaomi and Asus have already restricted bootloader access in key markets.
What to Do If You Rely on Bootloader Access
- Avoid Updating to One UI 8 if you value unlockability—future updates may remove access entirely.
- Use older firmware (Android 15/One UI 7) where OEM Unlock is still available.
- Monitor developer forums—some advanced methods (like reflashing older firmware) might still work but risk Knox tripping and warranty void.
- Consider alternative brands that still support bootloader unlocking (e.g., Google Pixel, certain OnePlus or Nothing models).
Final Thoughts
Samsung’s removal of the bootloader unlock option in One UI 8 marks a pivotal shift: customization and rooting access are now effectively blocked on new Galaxy models. While this may bolster device security and satisfy enterprise or carrier partners, it closes the door for developers and tech enthusiasts seeking deeper control.
Unless Samsung reverses course or enables special provisions, customization-dependent users must either stay on older firmware or switch to more open Android brands.
