Finally I tried to convert and another successful conversion report here in. It took long time and was difficult to convert. But connections are ok, and subnet manager is working now. Gateway and IP routing seem to be also available.
Cascading with another QDR switch, IS5030 is OK...
As I just simply can't find the SX6012 firmware, so I'd like to flash EMC6012 into MLNX 6005.
So, I'd like to flash the firmware into my emc sx6012 by issuing below:
flint –-allow_psid_change –d lid-0x<yourswitchlid> -i ./<firmwarename>.bin b
Where firmwarename is...