| Issue | Likely Cause | Fix | |-------|--------------|-----| | | Firewall blocking port 69 | Open UDP 69; use FTP instead. | | Flash full ( %Error copying: no memory ) | Insufficient space | Delete old IOS: delete flash:c800-old-image.bin | | Image corrupt ( %Error verifying ) | Bad download | Re-download and verify MD5 before transfer. | | Router boots old image | Boot variable not saved or multiple boot statements | Run show bootvar , then config-register 0x2102 and re-set boot var. | | No crypto commands | Wrong feature set (e.g., universalk9_npe) | Ensure you downloaded “universalk9” not “universalk9_npe” (no payload encryption). | 9. Licensing and Smart Software Manager (SSM) The universalk9 image requires proper licensing. After installation:
Need help with your specific 800-series model? Leave a comment below or consult the official Cisco Bug Search Tool for known caveats with this image. c800universalk9mzspa1593m10bin install
Router# license boot level advipservices Router# reload Then register with Cisco Smart Licensing: | Issue | Likely Cause | Fix |
