https://sarpi.penthux.net/index.php?p=rpi4geta64current

I didn't know where else to post this, but the Slackware AArch64 installer link here goes nowhere.

Ja, that's because Slackware AArch64 hasn't been released to the public at this time. It's still under development.

I'd highlighted a big bold message on the SARPi homepage stating the Slackware ARM 15.0 and AArch64 downloads were currently placeholders, and also put a "N/A" kernel version status on the download page(s) and in the filename(s), and no build timestamp because there are no builds to timestamp.

This was part of my plan to get the search engines (etc.) to pick up these pages for when the operating systems are released and available to download. Perhaps I was a little too far ahead of schedule in my efforts and thinking and/or did not correctly anticipate how many people would not read the website information relating to it.