My EWT935DK came from factory with W10-32 on it. There is no penguin logo displayed anywhere, anytime which is not surprising. The Penguin icon belongs to LINUX of which ANDROID is based. There is no reset hole next to headphone jack or anywhere else. An ANDROID style reset ..... volume + and pwr does not work on my device. Simply works just like pwr only does. So, it would be great if someone knows how to do a factory reset for this specific device. Ematic's user guide says there is a reset hole .... there is not. Their tech support is non existant.