| PCB marking | Known good firmware signature | |-------------|-------------------------------| | MXQ V3.1 | 20160826_8188ETV.img | | MXQ V3.2 | 20170112_8189FTV.img | | MXQ V5.1 | MXQ_S805_5.1.1_MT7601_20170401.img | | S805 V1.2 | BCM4335 variant (rare) |