diff --git a/README.md b/README.md
index 22f3c2d..ff7f180 100644
--- a/README.md
+++ b/README.md
@@ -60,9 +60,14 @@ it compatible with Zigbee networks.
     The binary with OTA header is at the same folder, ending with `z03mmc.zigbee`
 
 
-## Flashing from a custom bluetooth firmware
-1. Write transitional custom bluetooth firmware [ATC_ota_400000](./assets/ATC_ota_40000.bin) using an awesome tool from ATC_MiThermometer https://pvvx.github.io/ATC_MiThermometer/TelinkMiFlasher.html
-2. Flash z03mmc.bin firmware over transitional firmware to convert it to zigbee. Use https://devbis.github.io/telink-zigbee/ page if previous flasher stops because fo the firmware size.
+## Flashing from a custom bluetooth firmware (easy way for new devices)
+1. Open an awesome tool from ATC_MiThermometer https://pvvx.github.io/ATC_MiThermometer/TelinkMiFlasher.html
+2. Click "Connect" button and find device LYWSD03MMC
+3. After successful connecting device (Connected in logs) click "Do Activation"
+4. Next "Select Firmware", choose file with custom bluetooth firmware [ATC_ota_400000](./assets/ATC_ota_40000.bin), click "Start Flashing"
+5. You will see in logs "Update done after NN seconds"
+6. Reboot device removing battery, refresh web-page with flashing tool and connect device again. Do not change any control on page
+8. Flash latest [z03mmc.bin](https://github.com/devbis/z03mmc/releases) firmware over transitional firmware to convert it to zigbee. Use https://devbis.github.io/telink-zigbee/ page if previous flasher stops because of the firmware size.
 
 ## Flashing firmware with USB to UART