[c-nsp] ASR920 Break Into ROMMON

[Aaron]

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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