add support ota

hc

2023-02-18 a08c8b75ee83d7f62c9aefc23bfb42082aa4076c

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# Locally calculated after checking pgp signature
sha256    02e0a3dd3e4799e33103f70ec7df75348c8540966ee7c948e4ed8a42bbccfb30    ppp-2.4.7.tar.gz