C800universalk9mzspa1593m10bin Install

enable
configure terminal
copy flash:old_ios flash:new_ios  # Optional: Copy for safety
configure terminal
boot system flash:c800universalk9mzspa1593m10bin
exit
write memory
reload

The universalk9 image requires proper licensing. After installation:

Router# license boot level advipservices
Router# reload

Then register with Cisco Smart Licensing: c800universalk9mzspa1593m10bin install

Router# license smart register idtoken <your_token>
Router# show license smart status

Note: Some older 800-series routers use legacy RTU licensing. Verify with show license right-to-use. The universalk9 image requires proper licensing

configure terminal
boot system flash:c800universalk9mzspa159-3.M10.bin
(config) no boot system flash:old-image.bin   # Remove old boot entry if present
(config) config-register 0x2102   # Boot from flash on reload
(config) end

Router# configure terminal
Router(config)# boot system flash:c800universalk9mzspa1593m10.bin
Router(config)# exit