I use a 530 SSD as a Windows 8 OS drive, which came with the DC12 firmware, and have not had any restart or boot problems. That is on a ASRock Z87 board with an EFI booting Windows 8 installation.
I have had some minor recognition issues with the 530, but nothing that is any problem. The "System Browser" utility available in the board's UEFI/BIOS, will display all the active drives in the PC. The 530 with the DC12 firmware would not appear in that list of drives. It also was sporadically detected in the main Storage Configuration option in the UEFI. Otherwise the PC booted Windows from the 530 just fine, and the Intel RAID utility option that is supported in my board's UEFI would recognize the 530 fine. The DC32 firmware seems to have fixed the small detection issues I described above.
While I'm glad the 530 owners that had detection issues no longer have that with the DC32 firmware, the fix seems to be an example of what must be done to insure compatibility across widely varying PC systems. That is, the fix for the issue in this thread in firmware DC32, "Default Software Settings Preservation (SSP) for DIPM is changed from a default = on, to a DEFAULT = OFF" is possibly a compromise to accommodate those other systems.
I may be wrong about that, and I understand why this was done, but other users of the 530 may be losing a feature in order to enhance the SSD's compatibility. Just an observation.
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