Running a bit behind here but Samsung finally released their Magician software for the Mac. It runs on Intel and Apple Silicon Macs so there is now a much easier way to update Samsung M.2 SSD drive firmware especially on Apple Silicon Macs (which largely used to be go find a Windows PC or Intel Mac).
https://semiconductor.samsung.com/us.../support/tools
I'll revise the first post in this thread later, but until then... check your bloody SSD firmware version.
(I had trouble unzipping the Magician 8.0.0.900 installer from the link above, would no unzip by just double clicking on the downloaded file, I ended up having to run unzip from the shell (it complains of errors directory errors but seems to run OK). Then run the .pkg installer that was unzipped)).
Oh and there are new T9 USB Samsung external drives, they are USB 3.2 Gen 2x2 (20 Mbps) which is great if you have a PC with USB 3.2 Gen 2x2, but Mac only support USB 3.2 Gen 2 (10 Mbps). Hopefully for higher performance seeking Mac users Samsung will one day release a replacement for their discontinued, overpriced, and ran too hot, Thunderbolt 3 X5 SSD. There is a 4TB Ruggerd T7 external SSD (USB 3.2 Gen 2 (10Mbps)), I hope they also ship that as a 4TB standard T7 (USB 3.2 Gen 2 (10Mbps)), we'll see.
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I hope this is a trend with other SSD vendors also supporting easy firmware update utilities on Mac.