Unable to load IOS on ASA through ROMMON mode

[mansab.mahmood]

Hi,

I am unable to install an IOS on my Firewall (ASA5520) through tftp in ROMMON mode after repeated attempts. When i restarted my Firewall i got the message "Checksum verification on compression loader failed".

I thought that my IOS File was corrupt so i tried to upload another copy of the IOS from ROMMON.

The attached file shows my working and the error which i am getting.

Any help will be appreciated. thanks in advance.

[John Blakley · Accepted solution]

It looks like there may be something wrong with your device. I would create a tac case to see if they can help you further.

HTH,

John

[mansab.mahmood]

Thanks John,

I will open a TAC case and will share the outcome with you.