[Arty Z7-20 SD BOOT fail]

Can someone please share Arty Z7-20 u-boot environment variables to run SD boot?  My Arty Z7-20 board failed to boot from SD card after I run "env default -fa" from u-boot.  Below are the console messages at the u-boot and u-boot environment variables I have currently.  Any help would be appreciated.

*** Console message***

JTAG: Trying to boot script at 0x3000000
## Executing script at 03000000
Wrong image format for "source" command
JTAG: SCRIPT FAILED: continuing...
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
Found U-Boot script /boot.scr
2010 bytes read in 23 ms (85 KiB/s)
## Executing script at 03000000
Wrong Image Format for bootm command
ERROR: can't get kernel image!
 

U-BOOT Env variables

Zynq> printenv
arch=arm
baudrate=115200
board=zynq
board_name=zynq
boodelay=2
boot_a_script=load ${devtype} ${devnum}:${distro_bootpart} ${scriptaddr} ${pref}
boot_efi_binary=if fdt addr ${fdt_addr_r}; then bootefi bootmgr ${fdt_addr_r};ei
boot_extlinux=sysboot ${devtype} ${devnum}:${distro_bootpart} any ${scriptaddr}}
boot_net_usb_start=usb start
boot_prefixes=/ /boot/
boot_script_dhcp=boot.scr.uimg
boot_scripts=boot.scr.uimg boot.scr
boot_syslinux_conf=extlinux/extlinux.conf
boot_targets=jtag mmc0 mmc1 qspi nand nor usb0 usb1 pxe dhcp 
bootcmd=run distro_bootcmd
bootcmd_dhcp=run boot_net_usb_start; if dhcp ${scriptaddr} ${boot_script_dhcp};;
bootcmd_jtag=echo JTAG: Trying to boot script at ${scriptaddr} && source ${scri;
bootcmd_mmc0=devnum=0; run mmc_boot
bootcmd_mmc1=devnum=1; run mmc_boot
bootcmd_nand=nand info && nand read ${scriptaddr} ${script_offset_f} ${script_s;
bootcmd_nor=cp.b ${script_offset_nor} ${scriptaddr} ${script_size_f} && echo NO;
bootcmd_pxe=run boot_net_usb_start; dhcp; if pxe get; then pxe boot; fi
bootcmd_qspi=sf probe 0 0 0 && sf read ${scriptaddr} ${script_offset_f} ${scrip;
bootcmd_usb0=devnum=0; run usb_boot
bootcmd_usb1=devnum=1; run usb_boot
bootdelay=2
bootfstype=fat
bootm_size=20000000
cpu=armv7
dfu_mmc=run dfu_mmc_info && dfu 0 mmc 0
dfu_mmc_info=setenv dfu_alt_info ${kernel_image} fat 0 1\\;${devicetree_image} 1
dfu_ram=run dfu_ram_info && dfu 0 ram 0
dfu_ram_info=setenv dfu_alt_info ${kernel_image} ram 0x3000000 0x500000\\;${dev0
distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done
efi_dtb_prefixes=/ /dtb/ /dtb/current/
ethact=ethernet@e000b000
ethaddr=00:0a:35:00:1e:53
fdt_addr_r=0x1f00000
fdt_high=0x20000000
fdtcontroladdr=1eb0a488
fileaddr=3000000
filesize=7da
initrd_high=0x20000000
kernel_addr_r=0x2000000
load_efi_dtb=load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefi}
mmc_boot=if mmc dev ${devnum}; then devtype=mmc; run scan_dev_for_boot_part; fi
pxefile_addr_r=0x2000000
ramdisk_addr_r=0x3100000
scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${distro_bootpart}...; for;
scan_dev_for_boot_part=part list ${devtype} ${devnum} -bootable devplist; env et
scan_dev_for_efi=setenv efi_fdtfile ${fdtfile}; if test -z "${fdtfile}" -a -n "e
scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefi
scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${e
script_offset_nor=0xE2FC0000
script_size_f=0x40000
scriptaddr=0x3000000
soc=zynq
stderr=serial@e0000000
stdin=serial@e0000000
stdout=serial@e0000000
thor_mmc=run dfu_mmc_info && thordown 0 mmc 0
thor_ram=run dfu_ram_info && thordown 0 ram 0
usb_boot=usb start; if usb dev ${devnum}; then devtype=usb; run scan_dev_for_boi
vendor=xilinx

Environment size: 5225/131068 bytes