Armadilloフォーラム

お世話になっています。
㈱ワイヤレスコミュニケーション研究所の長野と申します。

Armadillo810で
[Howto : Armadillo-810/840で IEEE802.11ac USB無線LANアダプタ GW-450Sを動作させる]
の動作確認用イメージを用いてArmadilloを起動させようとしたところ、以下のように表示が出て起動できません。

RAMDISK: Couldn't find valid RAM disk image starting at 0.
FAT-fs (ram0): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
List of all partitions:
1f00 256 mtdblock0 (driver?)
1f01 256 mtdblock1 (driver?)
1f02 256 mtdblock2 (driver?)
1f03 4096 mtdblock3 (driver?)
1f04 4096 mtdblock4 (driver?)
1f05 56576 mtdblock5 (driver?)
No filesystem could mount root, tried: ext3 ext2 ext4 squashfs vfat
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
Backtrace:
[] (dump_backtrace+0x0/0x110) from [] (dump_stack+0x18/0x1c)
r6:00008000 r5:d1cf001d r4:d1cf001d r3:00000001
[] (dump_stack+0x0/0x1c) from [] (panic+0x84/0x1c4)
[] (panic+0x0/0x1c4) from [] (mount_block_root+0x240/0x288)
r3:d1c37f0c r2:00000020 r1:d1c37f38 r0:c048abf2
r7:c0511fa8
[] (mount_block_root+0x0/0x288) from [] (mount_root+0x58/0x68)
[] (mount_root+0x0/0x68) from [] (prepare_namespace+0x168/0x1bc)
r5:c0511fa0 r4:c0550060
[] (prepare_namespace+0x0/0x1bc) from [] (kernel_init+0x1c4/0x204)
r5:c0511fa0 r4:00000007
[] (kernel_init+0x0/0x204) from [] (do_exit+0x0/0x75c)
rebooted by watchdog timedout.
Hermit-At v3.2.4 (Armadillo-810/nor) compiled at 21:52:10, Jan 27 2014
hermit>

イメージの書き換えはnetflashで行っています。
[root@armadillo810-0 (ttySC2) /mnt]# netflash -b -k -n -u -s -r /dev/flash/userl
and /mnt/romfs-a810-GW-450S.img.gz

[root@armadillo810-0 (ttySC2) /mnt]# netflash -b -k -n -u -s -r /dev/flash/kerne
l /mnt/linux-a810-at9-GW-450S.bin.gz

解決方法、よろしくお願いいたします。