If you are looking to flash a device with a Rockchip processor (like the RK3328 or RK3229), you can generally find the necessary files on technical communities or developer forums. Here are the common steps and tools typically required for this process:

The main utility used to select a firmware image ( .img ) and "Upgrade" or "Restore" the device.

: Run the Driver Assistant and install the drivers.

: Open RKBatchTool , click the "..." or "FW Path" button, and select your .img file.

While there are several versions of the available for flashing firmware on Rockchip devices, there is no verified or direct official site named "Solid Story" hosting a specific version of this .rar file.