E8 Android Flashing Problem

Hi.
I'm sorry for knowing just English.
I'm going to flash android but the following error happens
No filesystem could mount root, tried:  ext4
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,3)
At first, it also said:
Enter your selection: 8
Start Linux ...
reading android kernel.. 25649, 12288
MMC read: dev # 0, block # 25649, count 12288 ...12288 blocks read: OK
completed
reading RAMFS.. 37937, 12288 0x30a00000
MMC read: dev # 0, block # 37937, count 12288 ...12288 blocks read: OK
completed
Boot with zImage
get_format
-------- 0 --------
Wrong Ramdisk Image Format
What should i do.
I wrote the "ramdisk_130826" to board.
Thanks.

Please just follow this:
http://www.armbbs.net/forum.php? ... &extra=page%3D1

Are you sure the board is not working?

When I have Android running on sdcard, power led never comes on, but board will boot up eventually. I can tell this by using Vysor.io to see the Android display.