Successfully solved the problem:
Extended
ProductController
, to replace product id of simple product by product id of parent configurable product. Used SO Answer:
Magento Catalog ProductController rewrite
Code in customProductController
:... $productId = (int) $this->getRequest()->getParam('id'); // Get parent configurable product $_product = Mage::getModel('catalog/product')->load($productId); if ($_product->getTypeId() == "simple") { $parentIds = Mage::getModel('catalog/product_type_configurable')->getParentIdsByChild($_product->getId()); // If parent exists if (isset($parentIds[0])) { $productId = $parentIds[0]; } } ...
PreSelect configurable product options depending on simple product. Used link to tutorial given by Vishal Sharma
Result (sorry can't post images): Screenshot