This has been mentioned in a few other threads on here (some by myself). It does work, that is how I use my printer (P1S). Since I have no cell service and phone is not connected to wi-fi the only way I can set up my printer was this method. Supposedly notepad ++ works better. I haven’t tested yet if the cfg file has to stay on the card or if the settings are loaded into something like nvram. I really don’t like the thought of storing ssid and password in plain text on a micro card and certainly wouldn’t do it in a buisness environment. BS works but I have to reconnect to printer a lot. Sometimes from just changeing between tabs in studio. Orca can connect to it also.
OK, just tested the card in/out boot. My printer has been off for a few days so I popped the card out and powered it on. Came up, showd SSID name in display area. Fired up BS and connected to device. Had to enter the super secret squirrel number but it did connect fine. And having to enter the number is no new thing, I have had to do it a couple of times. At least so far it is always the same number.