With your file open in Adobe Illustrator®, go to File > Save As.
Alternately, you can also click Command–Option–S (Mac) or Control–Option–S (PC) on your keyboard to open the Save As dialogue box.
In the Save As dialogue box, choose Illustrator EPS (eps) from the Format drop-down menu.
Click on Save.
In the EPS Options dialogue box, choose Illustrator 10 EPS from the Version drop-down menu.
Click on OK.
Check the icon of your EPS file.
The AI10 EPS icon is gray with a small yellow flag reading ‘EPS’ on the top left.