I am not able to reset the linksys extender, it's 4 years Old.
In order to reset your extender first you need to plug in your extender to the wall socket after that press the reset pin hole on there for 30 second once the light get blinking green it means it is reseted.
Plug in your extender in the wall socket then there will be a reset pinhole in the extender and you have to press that key for 30 seconds then it will get reset.