C3900-universalk9-mz.spa.157-3.m8.bin [upd] · Recent

Router# configure terminal Router(config)# no boot system Router(config)# boot system flash c3900-universalk9-mz.spa.157-3.m8.bin Router(config)# exit Router# copy running-config startup-config Use code with caution. 4. Verification After Reload

15.7(3)M is a Dead-End release for 3900 series — no new features after 15.7(3)M, only security and critical bug fixes. C3900-universalk9-mz.spa.157-3.m8.bin