Going back to WM5?

[ardhuru]

Hi, I upgraded my 3400 to WM6 using the directions on this forum, and by-and-large everything seems to be fine; however, 2 of my most-used programs now have a problem: SPB Time 2.2 and Sprite backup.

Is there any reliable way to go back to the original stock ROM?

Any advice would be highly appreciated!!