add support ota

hc

2023-02-18 a08c8b75ee83d7f62c9aefc23bfb42082aa4076c

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#!/bin/sh
echo AT+CHUP | bluealsa-rfcomm --hci=hci0 $( hcitool con | sed -n 2p |busybox tr -d "\n" | busybox cut -b 8-25)