The software patches the security and writes the new parameters. 3. UnlockTool (Paid Digital License)

Sometimes, yes. Many successful repairs require unlocking the bootloader first so the tool can send secure commands. Several tools, including Chimera Tool and Octoplus FRP, have an option to "Unlock Bootloader" specifically for the RMX3581. This is often a prerequisite for performing the IMEI write operation on newer security patches.

: A popular professional suite that supports various MediaTek and Unisoc models for tasks like enabling preloader mode and repairing corrupted identifiers.

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and generally discouraged by manufacturers as it involves altering hardware-level identifiers.