The initial boot code that allows the PC to communicate with the device's eMMC/NAND flash.

[OPTION] ShowLoaderSwitch=1 EnableReadBack=1 ForceMaskROM=1

Always double-check your firmware for the correct device model. A flash with the wrong parameter file is irreversible without specialized hardware. Backup first, flash second, and the Rk Android Tool V2.7.1 will never let you down.