Question by Ha!!
TI – 84 plus (the black kind, not silver kind) problem???
I lost some of the features after i downloaded some kind of OS (operating system). Before downloading, I had these kinds of features, like in ” Y= “, besides Y1, Y2, Y3, …. and Plot 1, Plot 2, and Plot 3, i had X1, X2, X3,… which allows me to graph a vertical line, or in “window” besides Xmin, Xmax, Ymin, Ymax,…, I had something like “shade …” (can’t remember the name), which allows me to shade, maybe? But anway, after i downloaded a different OS, i lost them. How i can restore them????
well, that is the problem. How do i restore the origional OS?




well if the os you download was a third party system it just dosent have the features you want so youll just have to restore the original os
As was said above, we need to know whether it was a TI upgrade, or something from a third party. It sounds like you may have had an application running that changed your graphs. Try running Transformation Graphing. I think that might fix it. In fact, try running all your applications one at a time, because it could have been something from a third party. Every time you run a application (APPS), then go look at your graph, and see if it’s corrected.