No internet connection is needed to install the software, unlike OTA updates.
Here’s a technical write-up on using an for the BlackBerry Z3 (STJ100-1) from a developer’s perspective. blackberry z3 stj100-1 autoloader developer
To get the exact file you need, can you check your current version in > About ? I can help you find a safe link for: The final 10.3.3 update Or a 10.3.2 stable version No internet connection is needed to install the
BlackBerry 10 prevents downgrades via normal update checks. Autoloader forces any OS version regardless of anti-downgrade counters. blackberry z3 stj100-1 autoloader developer
This often indicates a mismatch between the radio firmware and the OS. Ensure your autoloader includes both the OS and Radio.