I noticed there is new BIO patch for the fix of the sensor.  I am now able to disable the automatic screen roation whenever I tilted the tablet!

 

"01_BIOS_v1.3128.zip ==> fix "can¡¦t dynamically change HID for G-sensor" problem."

 

Download the patch from Acer support here: http://us.acer.com/acer/service.do?LanguageISOCtxParam=en&miu10einu24.current.attN2B2F2EEF=3750&sp=page15e&ctx2.c2att1=25&miu10ekcond13.attN2B2F2EEF=3750&CountryISOCtxParam=US&ctx1g.c2att92=453&ctx1.att21k=1&CRC=2054404012