[LEDE-DEV] Bad NAND my sysupgrade / help

[Denis Periša]

Hi, Thanx for input ;)
it's routerboard 433AH and 435G (rb433AH/435G)
I've found out like `nand scrub` .. haven't tried it yet as I don't
have nand tools compiled but will. But also I'm afraid it's not it.
It is bug.. I had few new RB435G ordered for citiy wireless and they
went from 0 to 100% bad during flash.. now shows 100% usage on kernel
partition..
however rootfs partition is intact by it. hm.
no u-boot however , RooterBoot or something like it driving it.. would
be nice to change it but I lack that kind of time to investigate it.

On Wed, Jan 31, 2018 at 5:03 PM, Alberto Bursi
<bobafetthotmail at gmail.com> wrote:
>
>
> 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
>
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