Probably the only way to tell is to check the OpenGarage circuit board. If it looks like this: (ESP8266-WROOM2) then it’s an early version with only 2MB flash:
https://cdn.sos.sk/productdata/29/56/3f698269/esp-wroom-02.jpg
If it looks like the one below (ESP12-F or ESP-12E) then it has 4MB flash:
https://www.elecrow.com/pub/media/blog/cache/840×620/magefan_blog/_-1_04_3.jpg
Because this firmware is larger than 512MB, and support OTA firmware update requires twice as much space as the firmware itself, it needs at least 2MB for firmware storage, plus another 1MB for settings and log, so it needs a minimum of 3MB flash (the closest being 4MB as there is no version of ESP8266 with only 3MB flash).
The OpenThings API may occasionally have a hiccup or two due to the access rate limit set on the server (we will tweak this later) but usually after a while it recovers. I don’t recommend querying it too frequently, like using a script or other home assistant device. I’ve had two installed with OTC tokens and have tested them over a week and they continue to work just fine, both through local IP and through OTC API.
