06-11-2021 08:08 AM
Hello,
I was trying to downgrade the iOS on an IR1101 router from ir1101-universalk9.17.02.01.SPA.bin
to ir1101-universalk9.16.11.01.SPA.bin.
I accidentally entered "boot system flash:/ir1101-universalk9.16.11.01.SPA.bin"
When I should have entered "boot system bootflash:/ir1101-universalk9.16.11.01.SPA.bin"
Now the router is in a boot loop because it can't find "flash:"
I've been able to ctrl+c to break and enter rommon> and manually boot, and then when I'm in the OS, I try to fix with the correct boot statement, but it doesn't take.
I've tried changing the boot statement by using the set command, but that doesn't save either. Even when I type "sync" after.
How to I fix this? I just want to forget about downgrading and load ir1101-universalk9.17.02.01.SPA.bin.
Thanks,
Padraig
06-22-2021 03:20 PM
Console into the router and reboot. Post the entire bootup process.
07-03-2021 05:20 PM
02-05-2024 08:12 AM
Are you still having this issue?
My solution is to load the desired image to a USB drive, and plug it into the router.
If the router boots to rommon:
Boot the router from the IOS image on the flash drive
boot usbflash0:ir1101-universalk9.16.12.05.SPA.bin
then copy the image to the router:
copy usbflash0:ir1101-universalk9.16.12.05.SPA.bin flash:
then verify integrity:
verify /md5 flash:ir1101-universalk9.16.12.05.SPA.bin
verify the boot variable with:
show bootvariable
Remove the variabl;e you don't want with:
no BOOT system flash:ir1101-universalk9.17.06.05.SPA.bin
Add the one you want with:
boot system flash:ir1101-universalk9.16.12.05.SPA.bin
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