Blackberry - Key2 Firmware

Let’s rewind. When you buy a used KEY2 today, the firmware version determines your security posture.

Go to Settings > About Phone > Build number
Example: ABI079 (early Oreo), ACT957 (latest Pie) blackberry key2 firmware

For baseband/modem: Settings > About Phone > Baseband version Let’s rewind

Post-Flash issue: Your IMEI might read "0." Don't panic. You must re-provision the modem using QPST (Qualcomm Product Support Tool) and your backup QCN file. Post-Flash issue: Your IMEI might read "0

BlackBerry (now owned by OnwardMobility’s remnants / TCL) stopped updates in 2021–2022.
Final Android version: 8.1 Oreo (some variants got 9 Pie via beta carrier builds, but not widespread).

How to manually check for OTA:

No official downloadable firmware packages are provided by BlackBerry Ltd. anymore.