掌機 - Miyoo Mini Flip - Extract U-Boot


參考資訊：
https://github.com/steward-fu/website/releases/tag/miyoo-mini-flip

$ dd if=spi_1001-79B9.bin of=uboot.bin bs=1 count=$((0x60000-0x30000)) skip=$((0x30000))
$ file uboot.bin 
    uboot.bin: u-boot legacy uImage, MVX4##I2M#g8ed2945CM_UBT1501#XVM\3757zXZ, Firmware/ARM, OS Kernel Image (lzma), 171464 bytes, Wed Oct  1 02:46:41 2025, Load Address: 00000000, Entry Point: 00000000, Header CRC: 0XBCFA28B2, Data CRC: 0XFB7EDF32

$ dd if=uboot.bin of=uboot.xz bs=1 skip=64 count=171464 status=progress
$ xz -fd uboot.xz
$ strings uboot | grep U-Boot
    U-Boot 2015.01 (Oct 01 2025 - 10:46:40)