05-24-2008, 10:45 PM
Hi! I installed OS 2.09 last night on my TI-89 and since then I have been unable to send any programs to my calculator via TI-Connect. I can not send anything whatsoever to the calculator from my computer. Whenever I attempt to send a program it says "Incompatible Type" for the Destination. I think I should some how down grade the OS but I can neither find a program to downgrade from nor could I be able to send it to my calculator. Please help me, I have to send some programs to this calc before my exams on Monday 
. Thanks!!!!
. Thanks!!!!