iAtkos was originally Intel only. As the whole hackintosh scene. They are not now. About the release though, they are both very similar and use the same kernel by default.

To answer your question: there is no way you can update without doing anything else. You always need to back-up your kernel and then restore it because most updates will replace your AMD kernel with vanilla one ( which for obvious reasons is Intel only ).

I think you're fine with Hazard release. Now about the long booting problem - try booting with -v flag and take a look at which points does your computer stop for a long time. This might help to identify the issue.

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