Because BlackBerry has shut down its infrastructure, you cannot do OTA updates. Here is how to keep your Z30 alive:
There are two main final "branches" of firmware for the Z30. Blackberry Z30 Firmware
Ensure you download the firmware specifically for your Z30 model (e.g., ). You can find your model under Settings > About > General Internet Archive Where to Find Firmware Files Because BlackBerry has shut down its infrastructure, you
Unlike Android or iOS, BlackBerry 10 firmware management is unique. You cannot simply download an IPSW (like iPhone) or a factory image (like Pixel). You need to understand three specific terms: Blackberry Z30 Firmware