Please note, for Brume 2 uboot, pls use LAN port.
As the WAN port is 2.5G which needs extra driver, it does not work in uboot.
So if LAN port does not work, you cannot flash using uboot.
If you are sure the LAN port is damaged, please return to us to investigate. This is the first case so I’d like to get it back to check.
Pls DM me for returning the product, or just write to us using email support at glinet.biz