Air Purifier 4 Pro ESP32 Firmware Dump

[epiller]

Hey @dhewg, thanks for this amazing repo, it's been really great and works flawlessly.
Even though this isn't an issue with your repo, I'm opening it as a public cry for help because I forgot to make an ESP32 firmware dump and now I can't go back to the original firmware in order to update the main controller's firmware.

If anyone reading this has a Xiaomi Air Purifier 4 Pro and wants to help: Can you please make a dump of your ESP32 firmware before flashing ESPHome and post it here?

Once connected to the chip, you can make the firmware dump using the following command: esptool.py -b 115200 read_flash 0 ALL xiaomi-air-purifier-4-pro-firmware-dump.bin