Topic: Restore original firmware on ZyXEL p-2812hnu-f1 (no firmware mtd)

Hi all.

I've tried to do it regularly using as said on wiki with original firmware from ZyXEL homepage ftp://ftp2.zyxel.com/P-2812HNU-F1/firmw … C.3)C0.zip

mtd -r write /tmp/original_firmware.bin linux
or 
mtd -e firmware -r write /tmp/original_firmware.bin firmware

however

cat /proc/mtd

shows that there is no such partition, kernel and rootfs are held separately


[    0.516000] 0x000000000000-0x000000040000 : "uboot"
[    0.524000] 0x000000040000-0x000000060000 : "uboot-env"
[    0.528000] 0x000000060000-0x000000260000 : "kernel"
[    0.536000] 0x000000260000-0x000008000000 : "ubi" 

I've tried to flash over kernel partition, but uboot then says that there is no kernel found
I've also blindly tried to cut of first bytes from the .bin firmware as it is for Linksys using dd and flash it again over where kernel begins

nand write 0x80800000 0x60000 0x800000

but to no avail since I don't know what I am actually doing
Does anyone know how I could do that?

Thanks