Arduino Robot no longer upload other sketch

Hello, I bought and received Arduino Robot. First I try to upload sketch example MotorTest and run Ok then upload M01_Logo and run OK after upload this sketch no longer upload other sketch. Can you help me to fix this problem ? I try to double press reset button when upload from IDE but seem dont't work.
Detail problem: when upload any sketch from IDE on Arduino Robot board the LED/RX blink and reboot on TFT display but don't uploading ...
Regards Luca Chu

[RESOLVED] Today I try press double reset button while uploading any sketch and with surprise it's work.