I need help to set up my GrovePi

I have a new GrovePi conected to my raspberryPi. I’ve already install as recommended. After sudo i2detect -y 1 I see that it is working ‘04’ is there, where expected. I start a simple program LED_blink. And it works, after 4 mim approx. it stops to work, the LED doesn’t blink anymore, although the message LED ON / LED OFF is still showing in the monitor. I stop the the program and try sudo i2detect -y 1 and the ‘04’ is not there anymore. It seems that the connection GrovePi to rasberryPi is not working anymore.
How can I solve the problem.

Can you run https://github.com/DexterInd/GrovePi/blob/master/Software/Python/grove_firmware_version_check.py and paste what output do you get. If it is older than 1.2.1, then you should run the firmware update script here: http://www.dexterindustries.com/GrovePi/get-started-with-the-grovepi/updating-firmware/.

Can you also post a few pictures of your GrovePi so that we can check if it looks good visually.