The bad magic number indicates a corruption either in the flash or in the file. So, could you please install the file again, and make sure that the size of the file on CCO is the same size of the file installed on your machine.Also verify the network connectivity.
Sometimes it can happen that there might be some hidden files, or might be some memory issues. these can be fixed by formatting the flash. First of all backup your configuration, and the downgrade.cfg file, then format the flash using the ''format flash'' command.Also, make sure to use the fsck command before formatting the flash in order to make sure that the flash is not corrupted
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...