cisco ios upgrade1 Cisco IOS Upgrade to 16.x from 3.x for IOS XE - Pre-requisites : For IOS XE 16.x, the router must be running a minimum version of 16.2(1R) of ROMMON : This upgrade procedure only applies to the ISR 4000 series of routers : Will need to download the IOS image and upload the image to the ISR 4000's bootflash : Will need to download the latest ROMMON image and upload to the ISRO 4000's bootflash - Upgrade 1. check the version of ROMMON current.. 2021. 8. 30. 이전 1 다음