You're looking for the BlackBerry Leap (ST100-1) autoloader download.

3. Extreme Sluggishness or App Crashes

Over years of use, residual cache and corrupted system files can degrade performance. A fresh install via Autoloader restores the original speed and stability of OS 10.3.2 or 10.3.3.

  • Avoid unlocking or non-official kernels unless you accept the risk:

    Bloatware Solutions: Modern custom autoloaders (like "Clean R2") are often preferred by the community because they remove non-functioning legacy apps and bypass the mandatory setup wizard, allowing the device to be used offline. Key Specifications for Leap STR100-1