Depending on the size BIOS you flashed and what bank you flashed it to determines on how you set the switches. The X3 BIOS is 1MB so the only possible settings you can have is:
Meaning: First/second switch to the right, third/fourth to the left.
Bank 5678: off on off off
Meaning: First/third/foruth switch to the left, second to the right.
The fifth switch is the Flash Protect switch. You need to have it to the left to flash a new BIOS and right to protect against flashing.