Many thanks Condi! Please help to check if my tablet can still be reverted to rootable FW version with below "getprop" output:
getprop
[dalvik.vm.dexopt-flags]: [m=y]
[dalvik.vm.heapgrowthlimit]: [48m]
[dalvik.vm.heapsize]: [256m]
[dalvik.vm.heapstartsize]: [5m]
[dalvik.vm.stack-trace-file]...