ESP8266 firmware update using espruino pico

Hi, What you're doing with the test commands sounds fine - that's as expected.

The Shim v2 has an angled edge on it, whereas the v1 has only 90 degrees edges. The difference is that the v2 shim has other Espruino Pins used up that mean the Pico can put the ESP8266 into bootloader mode rather than you having to mess around with wires.

The problem you've having is almost certainly that the ESP8266 isn't in bootloader mode. Since you have the v1 you'll have to do what those instructions say about connecting the wires. When you do it, the blue LED should flash once (red light on is expected)

It really not that hard once you figure out which 2 pins to connect, but it's hard to explain. I'll see if I can do a video on it.