Ok, denn der Befehl
mount -t ext2 /dev/mtdblock5 /tmp/config
gibt bei mir nur Fehler raus 
Ich poste später mal die genaue Ausgabe!
EDIT: So sieht es mei mir aus:
[/root] # mount -t ext2 /dev/mtdblock5 /tmp/config
mount: wrong fs type, bad option, bad superblock on /dev/mtdblock5,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
[/root] #
[/root] # dmesg | tail
[717424.649937] UBIFS: mounted UBI device 2, volume 0, name "config"
[717424.656033] UBIFS: LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
[717424.665237] UBIFS: FS size: 12316672 bytes (11 MiB, 97 LEBs), journal size 2031616 bytes (1 MiB, 16 LEBs)
[717424.674871] UBIFS: reserved for root: 0 bytes (0 KiB)
[717424.679998] UBIFS: media format: w4/r0 (latest is w4/r0), UUID 2609E4F0-9E11-420E-BCB6-BD87E27C858F, small LPT model
[717424.696465] UBIFS: un-mount UBI device 2, volume 0
[717424.701342] UBIFS: background thread "ubifs_bgt2_0" stops
[717424.712719] UBI: detaching mtd6 from ubi2
[717424.717689] UBI: mtd6 is detached from ubi2
[756988.340176] EXT2-fs (mtdblock5): error: can't find an ext2 filesystem on dev mtdblock5.
Alles anzeigen
Oder muß ich dann das mtd6 nehmen?
