05-11-2022 05:24 AM
Hello,
Is there a way, in Rommon mode to download the ASA image from a USB flash drive and boot?
I know it is possible to do that via TFTP by setting up the environment variables and using the tftpdnld command, but I could not find the commands to do it via USB flash drive, without using TFTP server and the GE Mgmt interface.
The main problem is that I have a firewall unit with a corrupted image, so it won't boot past Rommon (it says "Signature verification failed for key #1"). I would like to rewrite the ASA file via USB, and not TFTP/GE Mgmt interface.
The Rommon version is 1.1.18.
Best regards.
Solved! Go to Solution.
05-11-2022 06:08 AM - edited 05-11-2022 06:11 AM
Connect USB : (make sure FAT formated) - 4GB or 8GB USB stick should be good.
ROMMON> dir
You will see the USB disk1 depends on where you connected.
ROMMON> dir disk1: ( you will see ASA image)
ROMMON> boot disk1:asaimage.bin or
ROMMON>copy disk1:asaimage.bin disk0: ( change boot variable to boot)
Once it booted you can copy from USB to Flash and set boot variable to boot from Flash.
05-11-2022 05:27 AM
yes you can do follow below thread :
https://community.cisco.com/t5/network-security/my-asa-5506-x-stopped-working/td-p/4498788
05-11-2022 05:52 AM
Hi,
I followed the thread you suggested but I did not find information about loading an image in Rommon from a USB flash drive.
All I could find was the procedure for loading an image from a TFTP server.
Could you point me to where the information is exactly?
Best regards.
05-11-2022 06:08 AM - edited 05-11-2022 06:11 AM
Connect USB : (make sure FAT formated) - 4GB or 8GB USB stick should be good.
ROMMON> dir
You will see the USB disk1 depends on where you connected.
ROMMON> dir disk1: ( you will see ASA image)
ROMMON> boot disk1:asaimage.bin or
ROMMON>copy disk1:asaimage.bin disk0: ( change boot variable to boot)
Once it booted you can copy from USB to Flash and set boot variable to boot from Flash.
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