In your case, the acceleration will be significant, cut the time at least in half, the only critical point is that you need to have the previous firmware or the base one in order to make a patch. And this is already the need to introduce additional systems for identifying the firmware.

Delta compressed OTA it's good, but it doesn't solve goal.

Example use wifi 50%, application 30%, free 20%. 2 OTA. left for 3 OTA partitions, or can be distributed among existing.

esp32 when you turn on the WIFI/BT includes the library file in the firmware itself. But the stack itself does not change compared to the logic of the program. IDF also has a partition system (ota/filesystem/... ). Considering the code is copied to RAM and run, i have a question is how to modify the...

Hello, what steps have been taken? I understand that attachment is the final stage. you need to set up qca and write a driver [I/O Driver][/https://docs.espressif.com/projects/esp ... river.html]