This blog post and associated comments contains some details on how to flash Samsung SSD firmware from Dell onto unbranded Samsung SSDs:I managed to get the latest Samsung FW and flash it, but it didn't really fix anything.
Dell provided me with Dell PowerEdge Express Flash Ent NVMe AGN Firmware Release | Driver Details | Dell UK - which is a driver they support on their own version of PM9A3, but it doesn't work on our drives because they are not branded Dells. It's interesting because the release notes mentions fixing the exact error we see.
Any ideas if there are any hacks around using this Dell FW on a Samsung (non-Dell) drive?
Samsung SSD resurrection – [mjuː]wave
blog.muwave.de