If you encounter issues during or after the update, consider:
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Set your terminal emulator (PuTTY, Tera Term, SecureCRT) to:
Note: A valid Cisco Connection Online (CCO) user ID and log-in are required to download these files. Step-by-Step Installation Process For Windows Operating Systems
If you are working with Cisco ASR 900 series routers (like the ASR 901, 903, or 920), you’ve likely encountered the shift from traditional RJ45 console ports to the mini-USB console interface. To get your terminal emulator (like PuTTY or SecureCRT) to recognize the device, you need the specific Cisco USB console driver.
This report details the necessity, function, and acquisition of USB console drivers for the Cisco ASR 9000 Series routers (ASR 9001, ASR 9010, ASR 9904, etc.). Unlike standard RJ-45 console ports which use serial communication, the USB Type-B console port on ASR devices requires specific software drivers to interface with a management workstation (PC/Laptop).