How to upload WLED to ESP8266 with no USB connector

How do i upload wled to an esp8266 chip with no USB connector, ive looked into the programmer boards but they arent available right now. ive tried to upload wled using another esp8266 but that doesnt seem to be working either. how do i upload it, whats the best way.

You’ll need a USB serial to logic board that will give you TX and RX outputs that can be connected to the correct GPIO pins.

I’ve tried using an FTDI board and using the web installer it didnt work. should i use some other flasher tool instead?

The FTDI board is probably the right approach.

Did you have GPIO0 pulled to ground?
What message did you get from the Web installer?

What ESP8266 board do you have?
What does your wiring look like/ how did you connect it?