[c-nsp] ASR920 Break Into ROMMON

[Scott Miller]

The output didn't seem to format well, let's try it again:

System Bootstrap, Version 15.5(3r)S2, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2015 by cisco Systems, Inc.
Compiled Wed 01-Jul-15 03:53 by sdcunha
Starting Initialization of FMAN0
Loading ucode for FMAN0, size: 31424, ver: 106.04.14
Silicon Rev Major:Minor [1:1]
Initializing the pci..
IOFPGA version[17082912]
Boot ROM0
Last reset cause: BootFromUpgradeRegFail
UEA platform with 1572863 Kbytes of main memory

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

.....Break detected: (0x1)
Do you want to reset the router to the factory default
configuration and proceed [y/n] ?y

Router rebooting with factory default configuration

System Bootstrap, Version 15.5(3r)S2, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2015 by cisco Systems, Inc.
Compiled Wed 01-Jul-15 03:53 by sdcunha
Starting Initialization of FMAN0
Loading ucode for FMAN0, size: 31424, ver: 106.04.14
Silicon Rev Major:Minor [1:1]
Initializing the pci..
IOFPGA version[17082912]
Boot ROM0
Last reset cause: BootFromUpgradeRegFail
UEA platform with 1572863 Kbytes of main memory

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED

.....Resetting upgrade counter from failed upgrade
Directory asr920-universalk9_npe.16.06.05a.SPA.bin not found
Unable to locate asr920-universalk9_npe.16.06.05a.SPA.bin directory
Unable to load asr920-universalk9_npe.16.06.05a.SPA.bin
boot: error executing "boot
bootflash:asr920-universalk9_npe.16.06.05a.SPA.bin"
autoboot: boot failed, restarting...

On Thu, Dec 3, 2020 at 4:32 PM Scott Miller <fordlove at gmail.com> wrote:

> I have a ASR-920-12SZ-IM, which I inadvertently entered the wrong boot
> command in the config, saved the config and rebooted.  Now it's stuck in a
> boot loop.  I've tried breaking the boot, it asks if I want to reset to
> factory default, and I enter "y", it reboots but still tries to find that
> same bad ios file I entered in the initial configuration which was supposed
> to have been whipped when it went to factory default.  I can't for the life
> of me figure out how to get into ROMMON on this box.  Each time I break the
> boot, it just goes back to the same question, asking if I want to factory
> default.
>
> Here's what it's doing:
>
>
> System Bootstrap, Version 15.5(3r)S2, RELEASE SOFTWARE (fc1) Technical
> Support: http://www.cisco.com/techsupport Copyright (c) 2015 by cisco
> Systems, Inc. Compiled Wed 01-Jul-15 03:53 by sdcunha Starting
> Initialization of FMAN0 Loading ucode for FMAN0, size: 31424, ver:
> 106.04.14 Silicon Rev Major:Minor [1:1] Initializing the pci.. IOFPGA
> version[17082912] Boot ROM0 Last reset cause: BootFromUpgradeRegFail UEA
> platform with 1572863 Kbytes of main memory PASSWORD RECOVERY FUNCTIONALITY
> IS DISABLED .....Break detected: (0x1) Do you want to reset the router to
> the factory default configuration and proceed [y/n] ?y Router rebooting
> with factory default configuration System Bootstrap, Version 15.5(3r)S2,
> RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport
> Copyright (c) 2015 by cisco Systems, Inc. Compiled Wed 01-Jul-15 03:53 by
> sdcunha Starting Initialization of FMAN0 Loading ucode for FMAN0, size:
> 31424, ver: 106.04.14 Silicon Rev Major:Minor [1:1] Initializing the pci..
> IOFPGA version[17082912] Boot ROM0 Last reset cause: BootFromUpgradeRegFail
> UEA platform with 1572863 Kbytes of main memory PASSWORD RECOVERY
> FUNCTIONALITY IS DISABLED .....Resetting upgrade counter from failed
> upgrade Directory asr920-universalk9_npe.16.06.05a.SPA.bin not found Unable
> to locate asr920-universalk9_npe.16.06.05a.SPA.bin directory Unable to load
> asr920-universalk9_npe.16.06.05a.SPA.bin boot: error executing "boot
> bootflash:asr920-universalk9_npe.16.06.05a.SPA.bin" autoboot: boot failed,
> restarting...
>
>  The boot file  bootflash:asr920-universalk9_npe.16.06.05a.SPA.bin is
> invalid and does not exist.  The correct file which is on the box
> is  bootflash:asr920igp-universalk9_npe.16.06.05a.SPA.bin
>
> Anyone know how to break into ROMMON to blow out this config?  I've been
> at it for a couple hours, nothing I've found googling seems to work.
>
> Thanks.
>