Place the extracted .bin or .img file directly in the root directory (don't put it in a folder). Boot into Recovery: Unplug the power cord. Insert the USB. Hold the Power button on the device (not the remote).
To help you "make a paper" (which I'm assuming means a guide or report on how to handle this file), 1. Where to find the download Download TECHNOSTAR RIO SMART rar
Use FAT32 formatting. A 4GB or 8GB drive is usually best for older smart devices. Place the extracted
Technostar is a brand often associated with regional retailers (like Sharaf DG or European distributors). Hold the Power button on the device (not the remote)
If you are looking for TV firmware, don't just search the model name. Open the back of the device and look for the Main Board Number (e.g., TP.MS338.PB801). Searching for this number + "firmware" is much more reliable than searching "Technostar Rio."
Searching for specific firmware or ".rar" software files for a Technostar Rio Smart