hi to all 

is anybody aware of ESC programming and how to set all default value to ESC 

i m not able to program ESC 

can any body help me 

thanks 
nehutech

Check the operating manual of your ESC. Instructions are given and seem pretty clear - at least for the Castle Creation products I have used.

To expand on what Sushil bhai has already said... most ESCs have no reset button/switch that puts it back in factory settings.  The manual does list what are the "default"s for each of the parameters/settings that can be changed via programming; so you have to individually set each of them to the suggested defaults one by one.

BTW, you normally do not have to do any programming on the ESC, they work right out of the box for basic flying.  It is good to know about though, and be aware of the options/possibilities 

thanks for reply "sushil_anand" and "anwarbhai"

i have DYS esc and i don't have manual for it
i m searching it on net

You can also try searching the manual for a programing card it can also give you a lot answers about the different options here is a pic of a turnigy programing card from Hobby king