X300s firmware

Hi, 

I just received my SSD x300s 512g from newegg and then I clone my original ssd to it. I found its 4k read/write seems slow. Can someone verify if it’s normal or actually slow? bottom is the testing report.

Also the firmware is x2170002 per SSD dashboard, it also claim it’s up to date. However, on sandisk website, the newest firmware should be x2210400. 

Can someone give me some idea/advise? Should I download it somewhere and manually update with dashboard?

* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

   Sequential Read (Q= 32,T= 1) :   457.853 MB/s
  Sequential Write (Q= 32,T= 1) :   444.351 MB/s
  Random Read 4KiB (Q= 32,T= 1) :   156.933 MB/s [38313.7 IOPS]
 Random Write 4KiB (Q= 32,T= 1) :   142.311 MB/s [34743.9 IOPS]
         Sequential Read (T= 1) :   462.686 MB/s
        Sequential Write (T= 1) :   437.491 MB/s
   Random Read 4KiB (Q= 1,T= 1) :    25.228 MB/s [  6159.2 IOPS]
  Random Write 4KiB (Q= 1,T= 1) :    54.369 MB/s [13273.7 IOPS]

  Test : 1024 MiB [C: 40.0% (47.2/118.0 GiB)] (x5)  [Interval=5 sec]
  Date : 2017/08/10 22:00:17
    OS : Windows 10  [10.0 Build 15063] (x64)