I use this command to download the android5.1 source code from github,but it is something wrong about "cannot fetch uboot-imx. Code: ~$ cd ~ ~$ mkdir myandroid bin ~$ curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > ~/bin/repo ~$ chmod a+x ~/bin/repo ~$ cd myandroid ~$ ~/bin/repo init -u https://github.com/UDOOboard/android_udoo_platform_manifest -b android-5.1.1 ~$ ~/bin/repo sync -j5
i have solved this issue by myself,it's very easy. because about the "uboot-imx" part is change in default.xml ,so we need to change it . before: <project path="bootable/bootloader/uboot-imx" name="uboot-imx" remote="udooboard-github" revision="2015.04.imx-neo" /> changed: <project path="bootable/bootloader/uboot-imx" name="uboot-imx" remote="udooboard-github" revision="2015.04.imx" />