then please look for the packge that make this problem
i installed my soft like 5 or 6 times
every time i reboot my phone after cssu-testing upgrade
i get unbootable device ,
i use this repos
cssu-testing
extras-devel
extras-testing
extras
and flashing the kernel didn't fix the problem
, i tried to install kernel-power-52-framebuffer
but i got very fast debug , i couldn't read any thing from it , then it reboot

edit: (it's better to use cssu-devel when im not developer or tester rather than getting unbootable device or very slow device with the original soft )