Update v4 :
change date to 2016.01.04
change version to f4x
update microcde for cpu
Date:2010/02/17 CPUID:100FA0 PatchID:010000BF -> Updated Date:2011/10/24 CPUID:100FA0 PatchID:010000DC
Date:2010/03/11 CPUID:100F41 PatchID:010000C6 -> Updated Date:2011/10/24 CPUID:100F41 PatchID:010000DB
This Microcode update will fix Errata #438, #440 and #573 as per AMD documentation in Newer" AM3 CPUs having CPUID 100FA0 Phenom II X6 CPUs, CPUID 100F41 Opteron
Link in first post
The name and date of Bios change in windows.
In UEFI Bios continues F4a and the same earlier date.
In regedit, I do not notice changes
Is there way to update AGESA?
In "UEFI bios updater" it is not possible
Data and version it probably probaly in 2 modules(so need one more change in hex file to be in bios see)
You have latest microcde for fix fx i update this in v3 and v4 have this too but now i update for other cpu as phenom x6 and opteron so you cant see change in regedit because you dont have phenom x6 or opteron.
Latest agesa is 1.5.0.6 you have 1.5.0.5 is imposiple us Uefi updater is need change hex value the same as microcode cpu, IN AMI Bios update Agesa is very hard , i update succesfull agesa to 1.5.0.6 in my ga990xa ud3 rev1.0, because i have this motherboard and i can look how it works. If find some more time i will try update this in your motherboard.