[c-nsp] ASR920 Break Into ROMMON

Scott Miller fordlove at gmail.com
Fri Dec 4 10:31:33 EST 2020


That's definitely worth a look, thanks.

On Fri, Dec 4, 2020 at 5:18 AM Cassidy B. Larson <alandaluz at gmail.com>
wrote:

> I believe the bootflash is an SD card inside, you could pop it out and see
> if you can modify it on another asr920 or device, renaming the new filename
> to the one it's looking for.  Long shot, but who knows, might work?
>
> On Thu, Dec 3, 2020 at 5:24 PM Scott Miller <fordlove at gmail.com> wrote:
>
>> Ya I tried that too, it still tries to find the wrong ios file and start's
>> its loop again.  This one might be a brick.
>>
>> On Thu, Dec 3, 2020 at 5:15 PM Aaron <dudepron at gmail.com> wrote:
>>
>> > Try this
>> >
>> >
>> >
>> https://packetlife.net/blog/2010/oct/11/recovering-no-service-password-recovery-service/
>> >
>> >
>> > On Thursday, December 3, 2020, Aaron <dudepron at gmail.com> wrote:
>> >
>> >> Looks like you need to talk to TAC. The password recovery being
>> disabled
>> >> is not your friend.
>> >>
>> >> https://community.cisco.com/t5/routing/asr-920-boot-fail/td-p/3834996
>> >>
>> >>
>> >> On Thursday, December 3, 2020, Scott Miller <fordlove at gmail.com>
>> wrote:
>> >>
>> >>> 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.
>> >>> >
>> >>> _______________________________________________
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>> >>>
>> >>
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>


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