The message "bad file magic number" could indicate a number of things, including a flash that has gone bad. Anyways, if you are already in the rommon prompt, look for the existence of a valid image on the flash using the 'dir flash:' command. If a valid image exists, boot using that image. If no image exists or if it is corrupted, use the procedure as shown in the document 'ROMmon Recovery for the Cisco 1700 Series Router' at http://www.cisco.com/en/US/products/hw/routers/ps221/products_tech_note09186a00800942dc.shtml. If even that does not work, it is possible that the flash has gone bad.
My router shows that it has right image file in the flash dir but still won't boot.
I followed Recovery from ROMmon mode doc and no luck so far. Now let suppose that my image file has gone bad, where do i get one that is good for 1711 routers. For some reason my password would not allow me to download it from cisco.com
Is there a way that I can get a good image file for my 1711. Thanks
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...