Thanks Pali, i compiled the latest u-boot 2013.04-2 with attached kernel-2.6.28.10-cssu3 All steps were described at the top of this post, the only problem was to find the package: sdk-fiasco-gen As soon as i had this package installed - it was not so complicated. I noticed your advice and disabled cssu-devel in my Repos. Now i have this items in U-Boot-Menu: Kernel-2.6.28.10-power53 (default boot entry) U-Boot with attached Kernel-2.6.28.10-cssu3 (Internal NAND) Kernel-2.6.28.10-cssu3 U-Boot 2013.04-2 Ok i can't go back to the stock PR1.3 kernel-2.6.28-omap1 but i think, i can leave without it. Thank you for your help !