If you don't have the actual .exe file, search for Z10_STL100-2_10.3.3.3216_Autoloader.7z on Google or Telegram groups, then upload it yourself before posting.
[FIX/GUIDE] BlackBerry Z10 STL100-2 Autoloader 10.3.3.3216 – Final Working Download
After digging through dead links and broken servers, I’ve found a Autoloader for the BlackBerry Z10 (STL100-2) running the final official OS 10.3.3 . This is the last stable release from BlackBerry.