EAP245 V3 bricked

[lleachii]

@bkdwt

I don't have a computer

@bkdwt

without using a serial port

Is this a trick question?

Your device page says no:

https://openwrt.org/toh/tp-link/tp-link_eap245_v3#debricking

...and TFTP information (if any) is missing.

@bkdwt

only my S9+ with a hub and using a RJ45 cable

So to be clear, this means you only have a mobile device...with wired Ethernet?

@bkdwt

Any ideas on how to reverse this without using a serial port?

Actually, I assume it's because you think it's difficult or because you don't have a serial cable; but be advised, the serial port is semi-disabled from the factory anyway:

@ted_plum

On the underside of the board, there's a unpopulated R225 resistor that was able to connect to to get 115200 baud 8n1 UART output. I need to bridge solder it, but it at least works by holding a jumper wire against it.

I would advice booting the device while holding the reset button and running software such as Wireshark. This is to see if the device is making some kind of TFTP request.