At 99% the terminal blinked one final message: INSTALLING… then, in a line so small she almost missed it, a different tag: CONFIGURATION MIGRATION REQUIRED — PROCEED? [y/N]
to ensure the new image is persistent:
You will need to access your device's command-line interface (CLI) via SSH, Telnet, or a direct console cable. i tftp upgrade firmware version 1255 download install
If the file downloads, your TFTP server is ready. At 99% the terminal blinked one final message: