At first the mouse was working fine, that was before installing any of the software. However after installing the Sentinal III software and latest firmware (v1.18) problems started. The mouse does not respond at all anymore and the oled is blinking. Those symptoms started immediately after installing the firmware, so i guess the problem is probably caused by the firmware, not the other software. Now i would like to try a different firmware. Where can i download older firmware versions (before v1.18). B.t.w. i have aGigabyte GA-Z68X-UD3H-B3 mobo.