But why? What is Samsung doing with their DDR5 memory as versus the other manufacturers? What is Samsung doing wrong? Are they not holding themselves to the DDR5 specifications?
I didn't get the full details, sorry, but it's most likely something AMD missed to address in the previous AGESA release.
Doesn't mean anyone is doing something out of spec, it could simply be something AMD discovered that they had missed or was given some new information that hadn't arrived in time for the previous release.
Keep in mind that although JEDEC sets the specs on how each release of DRAM is supposed to work, it doesn't mean the implementations by each DRAM manufacturer is identical, as it's based on their knowhow, nodes and previous generations of DRAM, so there will be small differences and AMD, Intel etc. has to work around those.
Also, the previous release was about higher memory clocks, outside of JEDEC spec, so this is most likely related to that.