To ensure that your Galaxy S25's bootloader is unlocked before rooting, follow these steps:
1. Enable Developer Options and OEM Unlocking
- Access Developer Options: Go to Settings > About Phone. Find the Build Number and tap it seven times until you see a message indicating that Developer Options have been enabled.- Enable OEM Unlocking: Navigate back to Settings, then go to Developer Options. Look for the option labeled OEM unlocking and enable it. This allows the bootloader to be unlocked[3][6].
2. Prepare for Bootloader Unlocking
- Backup Your Data: Unlocking the bootloader will erase all data on your device, so ensure that you back up any important information.- Remove Accounts: For added safety, remove your Samsung and Google accounts from the device. This can help prevent issues related to Factory Reset Protection (FRP) after unlocking[3][5].
3. Boot into Download Mode
- Power off your device completely.- Press and hold the Volume Up and Volume Down buttons simultaneously.
- While holding these buttons, connect your device to a computer using a USB cable. This will bring up the download mode screen.
4. Unlock the Bootloader
- Once in download mode, you will see a warning screen about custom binaries. Long press the Volume Up button to proceed with unlocking the bootloader.- Confirm the unlock when prompted. The device will automatically perform a factory reset and reboot once the bootloader is unlocked[4][6][7].
5. Verify Bootloader Status
- After rebooting, check if the bootloader is unlocked by observing the boot screen. If it shows a warning indicating that the bootloader is unlocked, you have successfully completed this step.- Additionally, you can verify by entering fastboot mode (if applicable) and using commands like `fastboot oem device-info` to check the lock status[2][8].
By following these steps, you can ensure that your Galaxy S25's bootloader is unlocked and ready for rooting or other modifications.
Citations:[1] https://forums.androidcentral.com/threads/guide-how-to-unlock-bootloader-and-root-verizon-galaxy-nexus.141563/
[2] https://source.android.com/docs/core/architecture/bootloader/locking_unlocking
[3] https://www.youtube.com/watch?v=paO1sC720rg
[4] https://www.reddit.com/r/LineageOS/comments/n7yo7u/a_discussion_about_bootloader_lockingunlocking/
[5] https://www.youtube.com/watch?v=8P1C3FYmVH4
[6] https://xdaforums.com/t/how-to-unlock-bootloader.4244757/
[7] https://www.youtube.com/watch?v=8Y0BKZXChiA
[8] https://forums.androidcentral.com/threads/how-do-i-know-if-my-bootloader-is-unlocked.206138/