Hi, Thank you for your feedback. Unfortunately, I can not reproduce your problem on SSH connection. Please tell me what server are you using to connect? It seems that you may connect to remote host(not TELNET server) by using TELNET protocol. I am sorry that my reply is late. So, I am looking forward to hearing from you. Thanks.
Tera Term
I'm using "Send File" in binary mode. After a binary byte 0x0d a "0x00" is added. I think in Binary mode there should be no modification to the sended data.