Samsung devices do not use Fastboot. They use a tool called Odin .
Click to flash the modified boot configuration directly to your device's eMMC or UFS storage chips, effectively forcing the bootloader status to "Unlocked." Method 4: Firmware Downgrading (For Samsung and Realme)
Proper drivers for your specific phone installed on your computer. Charge: Ensure your phone is at least 60% charged. Cable: A reliable USB cable. how to unlock bootloader without sim card
: Toggle the OEM Unlocking switch to the On position.
devices (including Redmi and Poco) strictly require a SIM card with mobile data to bind your account to the device. General Guide for Most Android Devices Samsung devices do not use Fastboot
Before attempting any advanced techniques, try the simplest method: perform a factory reset without ever inserting a SIM card. Here’s how:
Connect your phone to the PC while holding down both keys simultaneously. This forces the device into BROM mode, allowing the tool to rewrite the bootloader partition instantly. Method 3: Samsung Devices (No SIM Required) Charge: Ensure your phone is at least 60% charged
Connect your phone to the PC and use adb to boot into EDL mode via the command: adb reboot edl . (If the device is bricked or locked, you may need to use hardware test points on the motherboard).
Carrier-branded OnePlus phones are often blocked from unlocking, requiring a signed token from the carrier. However, for specific models like the OnePlus Nord N10 5G T-Mobile, a proven method exists that bypasses this entirely. This technique involves manipulating a flag in the on the device. This forces the Android Boot Loader (ABL) to write a generic, non-carrier Software Project ID into the device's RPMB partition. On the next reboot, the bootloader sees this generic ID, bypasses the carrier check, and allows the fastboot oem unlock command to succeed—all without a SIM or unlock token.