All links below are provided for noobs and because I am a nice guy, but simply going to https://archive.synology.com/download/DSM/ or https://www.synology.com/en-global/support/download and then clicking the desired subsequent links will yield everything I am linking below. Seek and you shall find. Also keep in mind that I am not updating this post very often so you are better of learning how all this works.   ----------------------------------------------------------------------------