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While continuing to hold that button, connect the device to your PC using the USB cable.

format firmware images to the onboard storage (UFS/NAND) of Allwinner devices. Device Management phoenixsuit en.msi download

During installation, Windows Security may prompt you with a warning regarding unsigned device drivers (Allwinner Technology Co., Ltd). Click Install this driver software anyway to allow the USB switching utilities to function. While continuing to hold that button, connect the

The machine rebooted. The BIOS beeped—single, clear tone. The familiar boot logo appeared. While continuing to hold that button

Try a different USB cable, a different USB port (preferably a USB 2.0 port directly on the motherboard), or reinstall the drivers.