掌機 - Miyoo Flip - 如何進入MASKROM模式

參考資訊：
http://rockchip.wikidot.com/how-to-enter-rockusb-maskrom-mode

按住如下按鈕後，插入USB

$ sudo dmesg -c
    [ 8018.059804] usb 1-1: new high-speed USB device number 25 using xhci_hcd
    [ 8018.208353] usb 1-1: New USB device found, idVendor=2207, idProduct=350a, bcdDevice= 1.00
    [ 8018.208363] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

$ lsusb
    Bus 001 Device 025: ID 2207:350a Fuzhou Rockchip Electronics Company