problem with control board of t17e

[aminjafari]

Hello. I have a t17e and want to change firmware to braiins os , I change but not work on t17e and uninstall with bos+ of braiins , then my hash board was down and I can't flash with memory and i haven't any IP , two of green and red led such as this pic: https://imgur.com/mCoZ6Ie.

I get this USB TO UART convertor: https://imgur.com/hZ1n1Tb

And connect such as this: https://imgur.com/uRk1Uaf

open putty: https://imgur.com/cEXad9A

but no connect to control board , but when I disconnect gnd cable i get this: https://imgur.com/lCm2aAA

Can anyone Help me?

Thanks
Jafari