Please help with flashing Ilonda fish feeder ESP8266 board

I changed the wifi on this, and that seems to have made it unreachable. It started up the wifi access point, but connecting to it does nothing, no captive portal or anything.

So…the only thing i can do i guess at this point is flashing it the hard way using FTDI usb dongle. Could someone walk me through how to solder the pins to the TYWE3S board (using iLONDA Fish Feeder (L88) Configuration for Tasmota)

I put (FTDI to Fish feeder)
GND - GND
RX - TX
TX - RX
3V - 3V

Any other pins i need to solder? I think i need to short a GPI to GND for it to go in boot mode ?