[beagleboard] Problems booting Angstrom in BB - xM

Hi guys! I recently got my card with the default OS that comes on the
microSD, but when I connect the 5 volts I get the message that is below. No
matter how many times press the reset button, aparce always the same.
I think it is very serious, but I also think it is problem of the files in
the microSD, suddenly broke down some of those programs. I hope me and help
me clarify what happened. Thank you.

The message is this;

Texas Instruments X-Loader 1.5.0 (Mar 27 2011 - 17:37:56)
Beagle xM
Reading boot sector
Loading u-boot.bin from mmc

U-Boot 2011.03-rc1-00000-g9a3cc57-dirty (Apr 01 2011 - 17:41:42)

OMAP36XX/37XX-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C: ready
DRAM: 512 MiB
*** Warning - readenv() failed, using default environment

In: serial
Out: serial
Err: serial
Beagle xM Rev C
No EEPROM on expansion board
Die ID #524c00229ff80000016849a907022024
Hit any key to stop autoboot: 0
The user button is currently NOT pressed.
SD/MMC found on device 0
mmc_send_cmd: timedout waiting for cmddis!

note: this ^ was fixed in later u-boot's...

** Can't read from device 0 **

** Unable to use mmc 0:1 for fatload **
** Bad partition 2 **
Booting from nand ...

no devices available
Wrong Image Format for bootm command
ERROR: can't get kernel image!
OMAP3 beagleboard.org #

Re-flash your sd card to original: