Using these sources from http://www.angstrom-distribution.org/demo/beagleboard/

Angstrom-Beagleboard-demo-image-glibc-ipk-2010.3-beagleboard.rootfs.tar.bz2
modules-2.6.32-r70+gitr7b8926aa626991fa087b00f6bbc1fb6b0e8269b0-beagleboard.tgz
uImage-2.6.32-r70+gitr7b8926aa626991fa087b00f6bbc1fb6b0e8269b0-beagleboard.bin
(or uImage)
MLO
u-boot.bin

--------------------------begin-------------------------
Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24)
Reading boot sector
Loading u-boot.bin from mmc



U-Boot 2010.03-rc1 (Apr 14 2010 - 12:28:02)

OMAP3530-GP ES3.0, CPU-OPP2, L3-165MHz, Max clock-600Mhz
OMAP3 Beagle board + LPDDR/NAND
I2C:   ready
------------------------end-----------------------------