I recently got a TTL-USB adapter and I want to use it to downgrade my nspire's boot 2. I have a hardware revision I CX CAS, but my problem is getting the pins to stay and keeping the serial port from snapping shut while I attempt to connect the proper pins. I've been trying for hours, using tape to keep the pins down, but they continue to move around and I can't get them to stay. I haven't connected it to the computer in fear of one of the pins moving and messing up my calc. Could you please give me a tip on how to keep the pins in place and how to send the boot 2 to the nspire? I also have no knowledge of sending files through RS232. My operating system is Ubuntu Linux.
Thanks,
njaddison

My boot 2 is 3.2.4 and I need to downgrade it to 3.1.0 to use nlaunch. My goal is to have my cx ndlessed.
My jumper cables are the stiff kind with metal prongs on the end, and they won't go next to each other because of a black plastic thing on them (don't know what it's called).
Does anybody know where to find some flexible serial cables?
Like the kind in this picture: http://tiplanet.org/forum/gallery/image.php?album_id=4&image_id=41&view=no_count

Finally got the connections to stay put.
Now I am sending the file. Images attatched, tell me if I am doing this right.

OK, I attempted sending the file through the xmodem protocol, but my serial program keeps saying "Retry 0: Got 01 for sector ACK." This is very annoying, but I don't want to give up yet. I don't think that ndless 3.2 will be coming anytime soon, so I really want to downgrade my boot2 and use nlaunch.

EDIT: It also says "Retry 0: Timeout on sector ACK"
It's not sending at all. I can only get it to send raw files (no protocol).