Hi, All. As you know setting - memory shows available program memory (RAM). Without any running application(factory default), once it is booted. It shows 33.82Mb (available) but if I am keep watching the status , I can see decreasing 0.01Mb around every 5 sec. and seems stop at 30.75Mb in around 30 min. Do you know what is running? Is this issue or normal OS working? Regards. - Jaehoon -