Often marketed as Android 10 or 11, though internally many of these boards run a modified version of Android 8.1 (Go Edition) .
Send AT+VER over the primary UART. The module should respond with something like: yt9260ver11 firmware top
platform. Searching for "firmware top" generally relates to users looking for the most stable or latest system update for these devices to fix bugs, improve performance, or update Android versions. Understanding YT9260 v1.1 Often marketed as Android 10 or 11, though