While the specific "rar" file you're looking for is often hosted on technician-specific forums, you can find the schematic and pinout details on the following platforms:

: Community-shared firmware for this specific board can be found on Kazmi Elecom . Technical Context for eMMC Pinout

: You can find the full circuit diagram and voltage specifications on Scribd .

When using a programmer like the or RT809H to interface with the eMMC, you will typically need to locate the following points on the motherboard: CLK (Clock) CMD (Command) D0 (Data 0) VCC & VCCQ (Power supply points, usually 3.3V or 1.8V) GND (Ground)

: Similar board pinouts (like the PB819) are often cataloged on Scribd by technical communities.