Can't get communication either LAN or WAN port, any ideas how to recover?
root@OpenWrt:~# sysupgrade -n /tmp/squashfs-sysupgrade.bin
verifying sysupgrade tar file integrity
Sun Mar 5 18:28:36 UTC 2023 upgrade: Commencing upgrade. Closing all shell sessions.
Command failed: Connection failed
root@OpenWrt:~# Connection to 192.168.1.1 closed by remote host.
Connection to 192.168.1.1 closed.