To upgrade firmware using Network Configuration Manager, you can create the corresponding Configlet commands and upgrade firmware in multiple devices. Once that is done, the downloaded file should be transferred to a flash drive of the device, usually via TFTP or FTP. You can do this by logging in here and selecting your device type and version. This article is about firmware upgrade in Cisco IOS devices. Before upgrading IOS, you should make sure to obtain the latest IOS version. Total Control of Network Devices of Leading University.Business Continuity for Telecom Service Provider.Network Administrators & Device Configuration Blues.Conquering NCCM Challenges through Automation.Best practices in configuration Management.Reports on Inventory, Configuration Changes, Compliance.Multi-vendor device configuration support.Network Configuration and Change Management.What is Network Configuration Management (NCM).