PR4100 dashboard timeout after 30 sec

I purchased an 8TB PR4100, loaded my 5 shares and files, then updated to the latest firmware (2.31.149). I now get a dashboard login timeout after about 30 seconds. Changes I make while in dashboard stick, but the 30 second timeout makes work difficult! I tried opening on Chrome and Opera but the timeout is always the same.

You can try 40 second Reset to overcome on this issue. Please refer the below mentioned KBA-