Cisco 4331 Stuck in ROMmon mode

atiye.bigdeli · ‎06-01-2019

Hi Friends.

I have problem with the Cisco router 4331 after upgrading the ROMMON firmware. after upgrade, the router cant boot and I get this message and the router reboot and reboot.

===========================================

Initializing Hardware ...

Checking for PCIe device presence...done
System integrity status: 0x610
Rom image verified correctly

Current image running: Boot ROM1

Last reset cause: LocalSoft
ISR4331/K9 platform with 8388608 Kbytes of main memory

........
media drive bootflash: not present

........
autoboot: boot failed, restarting...

Resetting .......

=======================================

when I go to the ROMMON mode the router cant recognize the USB Flash and I cant do anything. there is no copy command and tftpdnld.

how can I boot this router.

the USB flash is formatted correctly and other router recognize that

the only command are these:

rommon 2 > ?
alias
boot
confreg
dev
dir
help
history
meminfo
repeat
reset
set
showmon
sync
token
unalias
unset

Best Regards.

Edwin Portillo · ‎06-01-2019

Hi my Friend,

You should try loading the IOS on a USB flash drive and force the router to boot via USB.

You can also feel it from Xmodem mode:

https://www.cisco.com/c/en/us/td/docs/routers/access/4400/hardware/installation/guide4400-4300/C4400_isr/rommon.html

atiye.bigdeli · ‎06-01-2019

Hi Edwin. thank you for your help.

I search for Xmodem command but I could not find the xmodem command.

Edwin Portillo · ‎06-01-2019

Please check this post where xmodem is used:
https://community.cisco.com/t5/networking-blogs/loading-an-ios-on-a-switch-via-xmodem/ba-p/3103557

atiye.bigdeli · ‎06-01-2019

Hi

There is no "copy" command.

I have only this commands:

rommon 2 > ?
alias
boot
confreg
dev
dir
help
history
meminfo
repeat
reset
set
showmon
sync
token
unalias
unset

Leo Laohoo · ‎06-01-2019

If the "media drive" cannot be detected, then doing xmodem or booting from USB is of no use. At the end of the day, the router is royally "turfed".
No point fixing it but organize for an RMA.

Leo Laohoo · ‎06-01-2019

Post the complete output to the command "dir bootflash:".

atiye.bigdeli · ‎06-01-2019

Hi Leo.

thank you for answer.

rommon 10 > dir bootflash:
media drive bootflash: not present

Leo Laohoo · ‎06-01-2019

How about "dir flash:"?

atiye.bigdeli · ‎06-01-2019

rommon 12 > dir flash:
media drive flash: not present

Leo Laohoo · ‎06-01-2019

RMA the appliance.

alexcharles · ‎12-05-2019

Hi Ateyi

You are encountering the error due to a bug below

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg37458/?rfs=iqvred

Issue boot command on rommon mode - It will boot with the available ios on the flash.

Once it boots, you need to upgrade the firmware to the unaffected like release 16.9(1r).