When you search for "yt9217b firmware update android 10 upd" , you are likely referring to a system image file (usually named update_auto_10_2021XXXX.zip or similar). Here is what a real firmware update does:
Unlike a Samsung or Pixel phone, where updates come directly from the manufacturer, yt9217b firmware update android 10 upd
The is a popular automotive head unit (car stereo) System on a Chip (SoC) manufactured by Allwinner. It is widely used in aftermarket Android car navigation systems, particularly those originating from Chinese manufacturers (often sold under generic names on AliExpress, eBay, or installed in local car dealership upgrades). When you search for "yt9217b firmware update android