I've been trying to do it with the Espressif flash downloader tool, using the settings that the tool suggests in its 'tooltip' (see attached).
However, the module doesn't boot after I flash with these settings.
I tried using the 'Combine Bin' button in this flash downloader tool, and suspiciously got a file that was bigger than 512MB. Perhaps the 'tooltip' is out of date, and refers to something you can't achieve with the latest firmware?
Attached is a screenshot of the settings I came up with.
I am wondering if there is a single combined bin file anywhere that contains the "best most recent" AT firmware that will fit on a 512KB module.
Thanks.