This firmware is suitable for SD2, HT2, SD2X, D4Z, VZ4, SD4, SD2 V3, SD2X V3, D4Z V3,D4Z V4, SD4 V2, SD4 V3, MDS2031, MDS2060, MDS4010, MDS4030, MDS2033, MDS2062, MDS4012, MDS4013, MDS4031.

Updates:

1. Enhanced security.
2. Improved system stability.
