ESP32 BLE OTA Updater

Step 1: Select Firmware

Select build/zigbee_blinds.bin (application image only).

The firmware file stays in your browser and is sent directly to your device over Bluetooth. It is not uploaded to a server.

Step 2: Connect & Update

Ensure your device is in OTA mode (triggered via Zigbee).

Fast transfer block: 16 packets — previous setting 32 packets — recommended 64 packets — buffered firmware, flow control

Start with 32 packets. Blocks of 64 use flow control; older fast firmware is limited to 32. If an upload fails, reconnect and try 16.

Connect to Device