your device is corrupt. it can't be trusted and will not boot g.com/abh

your device is corrupt. it can't be trusted and will not boot
g.com/abh

Hello, I tried root my phone NX616J ( nubia x ui.nubia.cn / rom / detail / 58 )
maybe someone gives me good instructions for flash img

I tried this:
fastboot -w update C:\nubiax\zip\update.zip
error:
NotSpecified: (archive does no...droid-info.txt':String)

and this:
fastboot erase modem
fastboot erase cache
fastboot format userdata
fastboot flash boot C:\nubiax\img\NX616J-V2-11Firmware\boot.img
fastboot flash...

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