@Ofloo_ We can find the syntax in the CLI guide of the switch. Syntax firmware upgrade tftp ip-address ip-addr filename name Parameter ip-addr —— IP Address of the TFTP server. Both IPv4 and IPv6...

@tatave TP-Link SMB router supports up to 4 WAN ports and 1 LAN port. But it doesn;t support cluster.

@donbender If your non managed switch doesn't support IGMP snooping, I think you don't need to enable IGMP snooping on T2600G as well. Maybe you can check if T2600G has IP conflict with other...

@Ofloo_ Firstly you need to enable "Reboot the switch using the backup image after upgrading is completed.". You can try to test again. If the interface still become unavaillable, it‘’s recommended...

@5945 You can refer to the FAQ https://www.tp-link.com/en/support/faq/2132/

@IsviLima It seems that TP-Link router has not method for firmware recovery. You can try to push the reset button, and check if your cable and uplink device is still online.