How to change product image for configurable products when attribute selected
If you are using Improved Layered Navigation and want an image of configurable product to change according to the selected attribute, please follow these simple steps.
Go to System > Configuration > Layered Navigation settings > Configurable Attribute Codes and insert a list of attribute codes separated by commas. This way you'll be able to show specific image for configurable products.
See more details on Improved Layered Navigation page
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