BPI-R2 Pro EMMC Boot Loader Problem

Hello , I have a Banana Pi R2 Pro right now, I installed Rockchip USB driver and Rockchip USB Download Tool as described in this link ( Getting Started with R2PRO - Banana Pi Wiki ) . My device showed up as MASKROM in RKDevTool. Then I tried to install the debian version in this link ( Debian-10 - Google Drive ). However, I couldn’t load it. Can you help me how to install it? Have a good day.

With kind regards…