It is not possible to downgrade ROMMON from isr4200_4300_rommon_169_1r_SPA.pkg TO isr4200_4300_rommon_167_5r_SPA.pkg in a CISCO 4331I have tried with IOS:- isr4300-universalk9.03.16.07.S.155-3.S7-ext.SPA.bin- isr4300-universalk9.03.16.07.S.155-3.S8-e...