mViewer and Prime not working

[mandiatutti]

Hi all! I'm trying to tranfer a .pdf file to my hp prime, i am following every step but it simply doesn't work... i downloaded this connectivity kit, which is the suggested one on the read me file: https://tiplanet.org/forum/archives_voir.php?id=507172
my firmware is 20180212 v13441 and the file i'm trying to upload is this: https://tiplanet.org/forum/archives_voir.php?id=1610610.
Once i convert the original pdf i simply drop the "teoriade.hpappdir.zip" file and the "teoriade.hpprgm" file on the arrow near the calculator name on the connectivity kit. yes i checked the file's dimensions and they should be fine.
Apparently the "app" is uploaded to the calculator but when i press shift+0 there's nothing and neither in the app list the new app isn't listed.

I tried to press the reset button, but nothing.

Please help me xD thank you!