> For the complete documentation index, see [llms.txt](https://bananapi.gitbook.io/bpi-m2-ultra-open-source-single-board-computer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bananapi.gitbook.io/bpi-m2-ultra-open-source-single-board-computer/bpi-m2ultrasourcecodeongithub/how-to-rebuild-bootloader-bpim2u-720p-emmcimggz.md). # How to rebuild bootloader BPI\_M2U\_720P-emmc.img.gz **How to rebuild bootloader BPI\_M2U\_720P-emmc.img.gz** 1. git clone 1. cp -a BPI-M2U-bsp/linux-sunxi/arch/arm/boot/dts/sun8iw11p1emmc.dtsi BPI-M2U-bsp/linux-sunxi/arch/arm/boot/dts/sun8iw11p1.dtsi 2. cd BPI-M2U-bsp ; ./build.sh all 3. mv SD/100MB/BPI\_M2U\_720P.img.gz SD/100MB/BPI\_M2U\_720P-emmc.img.gz