[LEDE-DEV] Bad NAND my sysupgrade / help

[Alberto Bursi]

On 01/31/2018 01:56 PM, Denis Periša wrote:
> Hi all,
>
> I got this once before but sent it on RMA.
>
> anyhow, I did some flashing from jffs2 to ubifs and initramfs kernel
> image loaded up fine, but on sysupgrade it marked all my kernel
> filesystem as bad nand.. 0 space left. I know for sure this is just
> fake mark as I copied kernel just before in it and It happended before
> to me.
>
> ANY , ANY chance there is some nand tool that can re-check those
> blocks and recover it to zero state?
>
> thank you!
>
>

I've seen commands in uboot (popular bootloader) that can reset nand bad 
blocks, you would need to connect to serial console by soldering pins to 
the device's board and then using a TTL-USB dongle to connect your PC to it.

But if it keeps doing that it might be a bug in the OpenWrt firmware 
(that can't use the NAND properly and then marks it as bad).

Would be useful to state what is your device.

-Alberto