hi
do you have access to mellanox to get the MLNX-OS?
if so, i can show you how to update the firmware of your switch back to mellanox, by doing a custom firmware build. i have done it sucessfully on 4 x SX6012 and 6005 Switches. But need the MLNX-OS software to install on the switch, and mellanox kindly wont give me access to download MLNX-OS!
Angry!