The SMART value for "Power-On Hours" (ID 09) of my SSDSC2MH120A2 stopped working and is now constantly showing 0x33 (51 hours). A similar problem was discussed in this thread "/message/115674 Bug after firmware update 2CV102M3" but in that case it could be traced back to incompatibility with Intel's RST driver, whereas my drive is connected to an AMD-based motherboard. (GA-MA78GPM-DS2H).
ATM I can not yet say whether other smart values shown in Intel's SSD Toolbox (v2.0.2) like "Host Writes" etc. are affected too. But at least the "Power Cycle Count" still seems to work.
