This article was written for Magento 1.x and is kept for reference. Running Magento 1 in 2026 is a security risk — ask me about migrating to Magento 2 / Adobe Commerce.
Set the first image as default base, small and thumbnail after imports that wrongly set the last image.
The full article is being restored as part of the site rebuild. Need this fix right now? Contact me and I'll send you the complete steps — or solve it on your store directly.