Firmware (OS) is different from MCU (Hardware control). Only update the MCU if you have specific hardware issues like a flickering backup camera. Which car model is the unit installed in?
Updating this OS is typically done manually via a USB flash drive rather than "Over-The-Air" (OTA) in the traditional smartphone sense. Updates for KSW Ksw-q-userdebug Os Update
Builds like v4.3.3 (May 2024) and v4.2.9 (December 2023) backport features from newer Android 11/13 systems. Firmware (OS) is different from MCU (Hardware control)