Just getting around to completing an install of my 1.2TB Intel 750 as the sole drive for a workstation booting to Win 10 64-bit (X99 ASUS Sabretooth i7-6850K with 16GB). I installed the new 3.4.0 version of Intel SSD Toolbox. Following the install, the optimizer was greyed out and the firmware button indicated that I needed to update. The firmware update button was greyed out, so 3.4.0 would not do a firmware update. Not a problem, I downloaded the ISO and did an update to the newest firmware via the ISO.
Following the installation of the new firmware, I started 3.4.0 and it no longer has the firmware red exclamation point, so that is now corrected with the ISO update. However, the SSD optimize buttons remain all greyed out.
Attached Is an export of the data.