Hello Mani,
Can you be a little more specific,
Are you saying your problem is that you copy the image from the TFTP to your ASA, then you rebot it and you get a log with an issue?
Is that correct?
Can we see the log mesage?
Julio
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC