Actually, I saw this post but have been waiting for my registration. Now that Im finally registered, I can post my solution.
I had this same thing happen to me as well. However, I decided to try and downgrade the firmware to 2.3 and it worked! Everything came back at boot, without reprogramming. When Im on 2.5, it wont come back unless I reprogram a different map. It was the same for 2 different sticks.
Try this and let me know if it worked for you.