Minor but welcome changes include faster GPS locking upon startup. The on-screen speed stamp now displays more reliably. The menu UI navigation also feels slightly snappier, reducing the input lag when pressing buttons.
Read the changelog carefully. Some updates require that you install an intermediate version first (e.g., you cannot jump from V1.8 to V2.7 directly). If you see a note saying “For V2.3 and above only,” update stepwise. rove r2-4k firmware update