Need help with OTA update on custom AT firmware

[RollingRocker]

Hello-
I have successfully setup the IDE and been able to compile and flash my ESP32-WROOM. As part of that I modified the AT commands a bit to suit my needs.
The next thing I would like to do is be able to update the AT firmware OTA by fetching the BIN file from one of my web sites.
The issue that I am running into is I can't find any good examples of how to update the AT command firmware OTA - and the related issue is that the out of box setup creates several partitions on the ESP32, but I don't know how or which specific files (from the compiler build) to fetch and how to load them to each partition.

Does anyone out there have an example or can step me through how to update the AT firmware OTA?

Thanks in advance!