Problem with firmware backup /MTD0-3 hashes (in)correct ?

Hello,

I just bought a new Seagate Dockstar device. I want to install Debian on it. But first I want to backup the original firmware.

I have saved the mtd0-mtd3 partition to an usb stick with the following commands:

nanddump -nof mtd0.dump /dev/mtd0
nanddump -nof mtd1.dump /dev/mtd1
nanddump -nof mtd2.dump /dev/mtd2
nanddump -nof mtd3.dump /dev/mtd3

(should be used for a full backup)

I have also found the following on the net to make a backup.

./nanddump -nf mtd0.backup.oob
./nanddump -nf mtd1.backup.oob
./nanddump -nf mtd2.backup.oob
./nanddump -nf mtd3.backup.oob

But it is mentioned that the images created with -nf option are discarded by nandwrite because of wrong size.

Only my uboot-original created with "./nanddump -nof uboot-original -s 0 -l 0x80000 /dev/mtd0" has the identical md5 hash as shown here: http://jeff.doozan.com/debian/uboot/valid-uboot.md5

I can't find anything on the net if the other hashes are correct.

I don't want to go any further and install Debian before I didn't know if my original firmware images are backup-ed correctly.

My hashes are:

sha1 hashes
===========
0ebc4edb6dcc67d3938142d215bc566757c4c63b mtd0.dump.oob
9d82cf6294ca624731142cb102ea4b0750f8d57a mtd0.dump
753d847630a9c532439c5b712df624e797be01d1 mtd1.dump.oob
e349d05c0d031b471cc52b200699d59d99f9db77 mtd1.dump
bf1a2d761fdaf250b80827e10b04db7415a0730a mtd2.dump.oob
9547b46c8c8ad5199f59ab33b0c57bbfa0749324 mtd2.dump
cc48a2c32170855c5713742bdd056f35e527a211 mtd3.dump.oob
db7f45cb50f59e08c027e4ec854f5bcc6abf776c mtd3.dump
1f19768d34330dc62bfc9d97d76f0ab91e3ff155 uboot-original

md5 hashes
==========
a4e02a38b8d872256a9348fa4f4e63a5 mtd0.dump
89f8aec50be7aa1d4ac65cabc6cd99fb mtd0.dump.oob
f63596ab20c24164b078e7938d18a78a mtd1.dump
353e8fbd5d21dfb189fc07d44331eb39 mtd1.dump.oob
45a44987480860f9e8f8ea9d64d4316a mtd2.dump
81b91ef8973556c71462af66f543668e mtd2.dump.oob
3131b1ed0797fafe9b4a9d6d8e644c1e mtd3.dump
34cf2bc1fe3ee96a22ad90ded39ef4aa mtd3.dump.oob
b2d9681ef044e9ab6b058ef442b30b6e uboot-original


Could someone give me a hint?

Thank you.

regards
Thomas

Do you have serial access?

The most critical element is the u-boot bootloader on mtd0. Anyway Jeff's Debian installer modifies mtd0 to install his version of u-boot which supports usb booting and doesn't touch mtd1-3.

You will need JTAG access to restore the u-boot so IMHO the backups are kind of pointless since you cannot do a restore via nandwrite. http://jeff.doozan.com/debian/uboot/files/uboot/ has the original mtd0 anyway.