SIP003U support is here, still open for contribution?

I added it with assist of AI, if anyone intrested in it, I can create a PR. It now runs perfectly on my phone.

<img width="371" height="820" alt="Image" src="https://github.com/user-attachments/assets/765c4cef-0c87-4651-8b5d-f7108c0ef4b6" />