Solved: C1941 Router IOS Upgrade from 150-1.M3 to 157-3.M8(MD) - Cisco Community
Solved: I have a C1941/K9 router running IOS verison of "150-1.M3" Can I upgrade it directly to 157-3.M8(MD)? Do I need to upgrade first the rommon from 15.0(1r)M9 to 150-1r.M16? EXISTING IMAGE:---c1900-universalk9-mz.SPA.150-1.M3.bin