How can i change the ip and default gateway of barcode printer Toshiba B-sx4?

I hope thisis understandable.

1. Switch printer off
2. Whilst pressing the [FEED] and [PAUSE] keys, switch the printer on. Display shows D I A G . V 3 . 1
3. Press [FEED] button 6 TIMES or until the display shows I P A D D R E S S
4. Press [PAUSE]
5. Press [PAUSE]. Display shows IP Address
6. Using the [FEED] and [RESTART] buttons, change the 1st number in the IP address
7. When you have reached the number you want, press [PAUSE] to step to the 2nd number in the IP address.
8. Again Using the [FEED] and [RESTART] buttons, change the 2nd number in the IP address
9. Again when you have reached the number you want, press [PAUSE] to step to the 3rd number in the IP address.
10. Repeat steps 8 and 9 until you have the 4 digits you want in the IP address.
11. After the 4th number has been entered and you press [PAUSE] you can change the GATEWAY IP ADDRESS.
12. Step through the above sequences to get the GATEWAY IP ADDRESS you want.
13. You'll then move onto the SUBNET MASK IP ADDRESS. Same steps as before.
14. The next and final item is the SOCKET PORT, enter this 5 digit number as above, stepping through each of the 5 elements that make up the 5 digit number.