[j-nsp] Backup u-boot image on SRX210?

[prd::S]

On 10/5/12, Michael Loftis <mloftis at wgops.com> wrote:
> --------------------
>
> Sent from my Motorola Xoom
> On Oct 4, 2012 11:42 AM, "Elle Plato" <techgrrl at gmail.com> wrote:
>>
>> On Thu, Oct 4, 2012 at 11:25 AM, prd::S <prd.stee at gmail.com> wrote:
>> > Hi, All.
>> >
>> > A power outage occured when I was flashing the u-boot image on an
>> > SRX210 via tftp.
>> > Then there's no output on the serial console even after several resets.
>> > I suspect that the primary u-boot image might be corrupted.
>> >
>> > The questions are:
>> > Does SRX210 has a backup u-boot image?
>> > If so, how to boot from that image?
>> >
>>
>> SRX-210 devices should be configured for dual boot partition by
>> default.  When you login after the primary
>> is corrupted the login banner should warn you that the device booted
>> from the alternate image,
>> something like:  WARNING: THIS DEVICE HAS BOOTED FROM THE BACKUP JUNOS
> IMAGE
>> and "show system alarms" should provide an alarm indicating the same
> thing.
>>
>
> UBoot is the BIOS more or less. None of this helps him since it effectively
> doesn't have a working BIOS to get that far.
>
> I would ping JTAC - pretty sure the unit has a backup uboot image it can
> fall back to but not having one I have no idea how to get at it myself.
> Usually there's a jumper or a button one can hit to get the CPU to address
> an alternate startup location.
>

Thanks all for your tips.

Actually there is a set of jumpers(5*2 pins) onboard called J10.
However I couldn't figure out which combination to fall back to the
backup u-boot image.

Finally I got it RMAed.