Hannspad SN14T71 HSG1281 Android 4.2.2 Build 2014012U-V1.1.8-13.3 Help Please

Hannspad SN14T71 HSG1281 Android 4.2.2 Build 2014012U-V1.1.8-13.3

Wifi works, External SD card works, can not update get invalid file. Can not connect with USB cable to pc

I did reset, pushed the reset button, Tried Vol+ and power can not get into recovery mode.
Went to USB, getting USB unmounted....??

When I launch Pre Play Store > End used Lic Agreement > ok >
I get "Network Connection Error or IO Exception"
Internet connection not available or I0 Exception, Please check your network/storage settings (what settings do I check)?
"turn off your wifi network, mount NAND FLASH and try again".

Any idea what is causing this? I don't know how to mount usb, or NAND FLASH

Thank you

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