[U-Boot] AM3703 does not boot from MicroSD card

[phantom0]

Hi 
I'm trying to upgrade u-boot from 2016.03 to 2017.09. When I boot it up,
u-boot gives me this error.
What could be the problem? Thanks.

U-Boot SPL 2017.09-dirty (Jan 29 2018 - 10:56:46)
Trying to boot from MMC1
MMC Device 0 not found
spl: could not find mmc device. error: -19
SPL: failed to boot from all boot devices
### ERROR ### Please RESET the board ###




--
Sent from: http://u-boot.10912.n7.nabble.com/