delete /force flash:old-image.bin squeeze flash: You’re in ROMMON. Recover via XMODEM or USB boot:
| Router Model | Minimum IOS-XE | Recommended Stable | |--------------|----------------|----------------------| | ASR-920-4SZ-A | 3.18.0SP | 16.12.4 | | ASR-920-4SZ-D | 3.16.0 | 16.12.4 | | ASR-920-12CZ-A | 16.6.1 | 16.12.4 or 17.9.x | | ASR-920-24SZ-M | 16.7.1 | 17.9.1a | | ASR-920-24TZ-M | 16.8.1 | 17.9.1a | cisco asr 920 ios download
Router# show version | include System image file System image file is "flash:asr920-universalk9_ias.16.12.04.SPA.bin" Router# copy flash:asr920-universalk9_ias.16.12.04.SPA.bin tftp: Address or name of remote host []? 192.168.1.100 Destination filename [asr920-universalk9_ias.16.12.04.SPA.bin]? Writing... #### This gives you a legitimate copy from a router you own. If you’re learning or labbing, Cisco Modeling Labs (CML) or VIRL includes ASR 920 images with a valid subscription. These are usually older releases but are legal for training. Why You Should Avoid “Free Download” Websites Google search will show sites like downloads.cisco.ru , files.cisco.com (fake), or filedude.com offering “Cisco ASR 920 IOS download free.” Do not use these. delete /force flash:old-image
Always verify checksums, test upgrades during maintenance windows, and keep a recovery plan. The ASR 920 is a rugged, powerful router – treat its operating system with the same care you give your production network. Writing