Hi guys i have slightly problem i set up everything fine and play with osmo but when i go on wifi option in osmo you can find 2.4 and 5 ghz i switch to 5 and now can't find osmo in wifi connection so can't connect to see anything on phone screen i use s6 galaxy so it has 5ghz
so how i can come back to 2.4?

This happened to me
You will need to reset your OSMO back to factory setting. The steps are explained in the user manual. You press the trigger and shutter at the same time and hold, turn the power on and wait until the right light is flashing, then release the buttons.

Here you go..

Please try to upgrade the OSMO to the latest firmware . http://www.dji.com/product/osmo/download .
After the upgrade, you can reset the wifi channel to 2.4G by the combination button:  Hold down the Trigger and Shutter button at the same time. Then, pull the power switch down until the System Status Indicator blinks green. Release the power button before releasing the Trigger.

thanks guys all done