WARNING: Unsupported compact flash detected. When legacy CF is inserted, the following error message appears: Legacy CF will not operate in Cisco 3900 series, Cisco 2900 series, and Cisco 1900 series ISRs. Cisco 3900 series, Cisco 2900 series, and Cisco 1900 series integrated services routers (ISRs) download images to new Advanced Capability CompactFlash (CF) memory cards.Restrictions for Upgrading the System Image This module contains the following sections: This module describes how to upgrade the Cisco Internet Operating System (IOS) software image on the following hardware: Upgrading the IOS Image on the Access Point.Secure an IP Address on the Access Point.How to Upgrade the IOS Image on the Access Point.Saving Backup Copies of Your New System Image and Configuration.Loading the New System Image from ROM Monitor Mode.Loading the New System Image from the Cisco IOS Software.

Using a PC with a CompactFlash Card Reader to Copy the System Image into Flash Memory.Using the ROM Monitor to Copy the System Image over a Network.Using TFTP or Remote Copy Protocol to Copy the System Image into Flash Memory.Copying the System Image into Flash Memory.Ensuring Adequate Flash Memory for the New System Image.Ensuring Adequate DRAM for the New System Image.Saving Backup Copies of Your Old System Image and Configuration.How Do I Choose the New Cisco IOS Release and Feature Set?.Which Cisco IOS Release Is Running on My Router Now?.Information About Upgrading the System Image.Restrictions for Upgrading the System Image.

Cisco ios upgrade