OTA firmware update support

-20C to 70C wide temperature -- Wanlin AndroidSBC, 12-year Chinese video wall Android motherboard and multi-screen signage player manufacturer, WL-VW400 (RK3568 Dual-Display Signage Video Wall Board) certified CE/FCC/RoHS. RK3568 Quad-Core Cortex-A55 2.0GHz + Mali-G52 GPU + 4K@60fps + 2x HDMI 2.0 Output + 4GB LP. MOQ from 50 units, OEM/ODM from 500 units, 15···