參考資訊：
https://www.oesf.org/forum/index.php?topic=36338.0
https://www.mygnu.de/2020/02/exfat-support-for-the-cosmo-communicator/
Debian x64
$ cd $ sudo apt-get install gcc-aarch64* clang build-essential libncurses-dev bison flex libssl-dev libelf-dev bc git gcc-aarch64-linux-gnu python $ wget https://github.com/steward-fu/website/releases/download/cosmo/cosmo-android-kernel-v25_source.tar.gz $ tar xvf cosmo-android-kernel-v25_source.tar.gz $ mkdir KERNEL_OUT $ make O=../KERNEL_OUT -C kernel ARCH=arm64 k71v1_64_bsp_defconfig $ cd kernel $ make O=../KERNEL_OUT ARCH=arm64 CC=clang CLANG_TRIPLE=aarch64-linux-gnu- CROSS_COMPILE=aarch64-linux-gnu- all -j4 $ cd ../packing $ ./mkbootimg --kernel ../KERNEL_OUT/arch/arm64/boot/Image.gz-dtb --ramdisk root-boot.img-ramdisk --base 0x40078000 --second_offset 0x00e88000 --cmdline "bootopt=64S3,32N2,64N2 buildvariant=user veritykeyid=id:7e4333f9bba00adfe0ede979e28ed1920492b40f" --kernel_offset 0x00008000 --ramdisk_offset 0x14f88000 --tags_offset 0x13f88000 --pagesize 2048 -o mykernel.img $ cp mykernel.img ../cosmo-customos-installer/
P.S. 將cosmo-customos-installer資料夾複製到MicroSD根目錄，進入官方Recovery後，選擇Install MyKernel