hello pls help..my S9 signature lock 2019, then have missing chip. beside sd card slot..I buy USB to uArt from amazon from this link. I try connect my s9 board from usb s9 board Rx to Tx, Tx to Rx,then Ground, I used cool term. i follow the instruction above, then I power my board I got a reading..continuously...no stopping I cant log in cause continues reading...or receiving from my board..pls help to unlock my s9 i try everything from GUI Sd card but nothing happen I thought the USB to TTL is working here..https://www.amazon.com/gp/product/B00LZVEQEY/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1