gl-s10-esphome-config.yaml

# NOTE! First upload has to be done via UART - seems that OTA is not possible if ESPHome-compiled firmware is just uploaded
# see note at https://esphome.io/components/esp32_ble_tracker.html

esphome:
  name: gls10
  platform: ESP32
  # https://github.com/esphome/issues/issues/1098#issuecomment-845789058
  board: esp32dev
  platformio_options:
    platform: espressif32@3.2.0
    board: az-delivery-devkit-v4
    board_build.mcu: esp32
    board_build.f_cpu: 240000000L

ota:

api:

# nice for debugging, but seems that this generates reboots once in few minutes
# see https://github.com/esphome/issues/issues/2634
# web_server:
#  port: 80

logger:

# uncomment if you want to use wifi
# wifi:
#   ssid: !secret wifissid
#   password: !secret wifipass
#   fast_connect: true
#   power_save_mode: HIGH

# comment out if using wifi - only one can be in use
ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO17_OUT
  phy_addr: 1

esp32_ble_tracker:
  # not sure if necessary but
  # https://github.com/esphome/issues/issues/1098#issuecomment-606784815
  # might be issue when using wifi
  scan_parameters:
    interval: 160ms
    window: 15ms
    duration: 60s

sensor:
  - platform: ruuvitag
    mac_address: AA:FF:DF:BE:AB:FF
    humidity:
      name: "Somesensor Humidity"
    temperature:
      name: "Somesensor Temperature"

Correct.

Ok, so can you please post a copy of the YAML file you did use to flash the OMG firmware on to the GL-S10 ?

No, actually I cannot. OMG does not use any YAMLs.

Please do some own research regarding what is ESPHome, what is OMG and how those are installed and how those differ.

Ok, thanks for your help so far 😊

@savikko , please tell me which binary you uploaded to GL-S10?

The binary ESPHome generated.

I asked about OMG binary. By the way, I used generic esp32dev-ble and it is work perfectly but I don't need ethernet at all.

Ah, regarding OMG i used that esp32dev-ble.
Working perfectly as well, using wifi.