Sorry for reposting this from Ti-Planet (https://tiplanet.org/forum/viewtopic.php?f=15&t=25094) but I´m really worried about this

I´m trying to send the Boot 2 to my calculator with Hyperterminal but once I get into the menu to flash it with DOC+ENTER+2 , I get the text saying "Begin XMODEM file transfer" which is fine but then a bunch of strange symbols ("") start to happear and if I try to send it to the calculator it just gives connection failure.

Here is a screenshot:



Edit:Sorry, I´ve already found the solution but fogot to say here. Go to the link down below over Ti-Planet. Thank You
What should I do now?

Note:If I don´t connect USB TTL to the PC just to the calculator. It gives me steady red and steady green