mounted nfs not updated on 6638 evm

Hi,
I have installed the mcsdk_linux_03_00_02_14 on my linux host for a 6638 evm.
I am using nfs boot system and used/copied the new images to my tftp server
on host.
I also updated the u-boot on SPI NOR flash.
I have changed the "name_fs" env variable to "tisdk-rootfs-rt.cpio.gz".
I am not sure what is missing, since after the boot, the mounted file system on
the host does not seem updated/changed!
I was hoping to correct the boot error:

Starting udev
ERROR: could not open directory /lib/modules/3.8.4-rt2: No such file or directory
WARNING: -e needs -E or -F
ERROR: could not open directory /lib/modules/3.8.4-rt2: No such file or directory
FATAL: could not search modules: No such file or directory

I am sure that the "tisdk-rootfs-rt.cpio.gz" has the /lib/modules/3.8.4-rt2 that I need.