掌機 - Miyoo Mini Plus - Extract U-Boot

步驟如下：

$ cd
$ wget https://github.com/steward-fu/website/releases/download/miyoo-mini-plus/mtdblock0
$ dd if=mtdblock0 of=uboot.uboot bs=1 skip=196608
$ dd if=uboot.uboot of=uboot.xz bs=1 skip=64
$ 7za x uboot.xz
$ strings uboot | grep "U-Boot 2015"
    U-Boot 2015.01 (Mar 26 2023 - 23:38:58)