Firmware update

[Ma_LSer]

Hi! I’m looking for some advice.
I’m using an ESP32 for monitoring and I need to update the firmware. Is it possible to do this remotely? If so, I’d appreciate some guidance on how to set it up and whether it’s a complicated process, since this will be my first time doing it.
I’m also hoping the update might help reduce power consumption since the device is battery powered.

[MicroController]

Not sure what exactly you mean, whether you're 'using' an ESP-based solution from somewhere or if you're using an ESP to run your own firmware.
But generally:
1. The ESP hardware has no "remote" update capability built-in.
2. The firmware running on the ESP can implement a "self updating" feature ("over-the-air (OTA) update") where it can accept a new firmware from any source/via any protocol it wants (WiFi, Bluetooth, SD card, or whatever other data source it supports) and update itself with that. If the firmware you're currently running does not itself implement the "remote" OTA functionality you desire, you're out of luck.

[David_lo]

Hi!
Since it’s your first time it’s a good idea to have someone you can reach out to if needed, especially since you’ll be doing it remotely.
ESP32 supports OTA updates over HTTP using the official libraries but it does require some setup and configuration.
Alternatively, there are third-party tools available that are easier to get started with. You can find more details here: https://www.flexihub.com/over-the-air-software-update/