adb shell cat /sys/devices/platform/gnss/version # may show VMM build getprop ro.boot.vmm_version dmesg | grep -i vmm
Because the VMM handles power state transitions (C-states, P-states), outdated firmware can cause the CPU to run at maximum frequency constantly, draining a 6000mAh battery in under 2 hours. sp9853i 1h10 vmm firmware update