Installing new ROMS in V32bis Zoom/modems (On the external modem detach all cable, remove the 4 screws on the bottom of the modem. The case will split in half.) Look on the modem for 2 rectangular chips with white labels. They will have several numbers, and also have an "S"(SLOW) on one and an "F"(FAST) on the other in the number string. On one end of the chip socket and one end of the chip you will see a small 'indent'. Make sure the indents match when you install the new chips. Replace the F chip with the new F chip and the S chip with the new S chip. The old chip may be removed by sliding a small flat object (like a small screwdriver) under the chip. When installing the new chips be careful not to bend the pins.