DT-50 firmware(build date is 2023-02-20)
https://drive.google.com/file/d/18YP_QqJ0Ae6Yrc82aI6SnCkZv0BqBobx/view?usp=sharing
DT-50 fimware (build date is 2022-06-10)
https://drive.google.com/file/d/1cYUlvEXxv9IExRwISb6cyvgfqf9HnSEu/view?usp=share_link