C1900-universalk9-mz.spa.158-3.m7.bin Download Fixed
Backing up your current configuration ( copy running-config tftp ).
Use a TFTP or SCP server to move the file to the router's flash: copy tftp: flash: c1900-universalk9-mz.spa.158-3.m7.bin download
Before upgrading, ensure your router has sufficient (Flash) and DRAM . Backing up your current configuration ( copy running-config
.bin – Bootable Cisco IOS binary image c1900-universalk9-mz.spa.158-3.m7.bin download