fastboot flashing lock or
fastboot flashing unlock Or on some Realme devices: unlock bootloader realme c35
In the same command window, type:
fastboot oem lock Re-locking requires 100% stock ROM, recovery, and no modifications . Otherwise, your phone will brick. Final Warning Realme C35 (MediaTek Helio G85) is not as developer-friendly as older Realme models. Many users report that the In-depth Test app no longer works for new registrations after Realme shut down official unlock for many devices (circa 2023–2024). fastboot flashing lock or fastboot flashing unlock Or
Proceed only if you have confirmed the official unlock path still works for your specific RMX3511 firmware version. Check XDA Forums for latest status before starting. Many users report that the In-depth Test app
The bootloader cannot be unlocked by any public free method. Paid tools (e.g., MTK Client with auth bypass, or hardware dongles) exist but are risky, often scammy, and not recommended.