Hi, I have routerboard 433  and trying to load openwrt on the board.,
Until installing openwrt on board everything goes find but when I want to install vmlinux.elf image to the board, the wrong section comes.,
after listing the mtd partiation I see 7 partiations from mtd0 to mtd6
and when I want to erase kernel that is mtd5 with the command mtd erase kernel, the part is not erased.
And then it gives bad block warnings.
also there is some differences when formatting file system yaffs2 jffs2

Does someone has knowledge about memory management including file system and bad block management and truely installing  openwrt on routerboard 
we made the board working and loading the kernel but there are warnings and there is something that is not clear?