Router# copy running-config tftp: Address or name of remote host []? 192.168.1.50 Destination filename [router-confg]? c1900-backup-config Use code with caution. Stage 2: Transferring the New Image
Router# conf t Router(config)# boot system flash:c1900-universalk9-mz.spa.157-3.m9.bin Router(config)# do write memory
Due to the End-of-Life status, obtaining this image directly from Cisco is difficult. The primary, and , method is via a valid service contract for your specific router. The process is highly recommended to be done on a lab bench before deployment. C1900-universalk9-mz-spa-157-3-m9-bin Fix Download
Needing to update from an older M-release to M9 for patches. Where to Download (Securely)
The Cisco Software Central portal is the only guaranteed safe source for this image. Router# copy running-config tftp: Address or name of
To summarize the "fix and download" process:
From the router's privileged EXEC mode, ping the TFTP server's IP address to ensure connectivity: Stage 2: Transferring the New Image Router# conf
Tell the router to use the new "fixed" image on the next reboot.
If you are upgrading from an earlier version (like M4, M6, or even M8), the "fixes" usually address:
: Includes all feature sets (IP Base, Security, Data), which are activated via software licenses . mz : Indicates the image runs from RAM and is compressed.