after i proceed the upgrade the sreen console show me:
TFTP Succeeded
Save to flash. It may take a few minutes ...platform = 25, cpu = 12, version = 18
update new flash image (020dc920,15240212)
platform = 25, cpu = 12, version = 18
offset = 20, address = 5800000, size = 15240134
date = 213a, sw_version = 31008000, cksum = fd782263
********Invalid image!!!
********Bogus image - not authenticated!!!
Fips check failed
Done
I the image is idem 5.4.0, please what could I do?