i finally succesfully install on sdcard but no boot.scr or uImage... or the files go in special directory on computer's hard drive? i installed u-boot on pc and try to do this by myself. Copied the generated boot.scr and uImage on first fat partition. and copied item file on /etc/multiboot.d

On n900 U-boot PR1.3 and bootmenu is installed. tried to run sdboot but just got a black screen and reboot.

attached install.sh file (modified for work on mmcblk0) and item file. what am doing wrong?