1 Switch off your Amiga and disconnect the power.
2 Antistatically discharge yourself.
3 Place the A1200 with the keyboard facing down on a soft surface. Remove the five screws that secure the casing and retain them safely. Turn the computer around and remove the top case carefully.
4 The pair of KickstartTM chips can be accessed through the open space in the metal RF shielding. The sockets are labelled U6A and U6B on the motherboard. Please note the alignment of the chips and escpecially take note of the notch embedded into one end of each chip. Using a suitable tool (e.g. a flat blade screwdriver), carefully remove the ROMs from the sockets. You can prise them out of the sockets ensuring that you do not bend or break any of the ROMs' fragile legs.
5 Now you can install the 3.1 ROMs into the empty sockets. Place ROM labelled 391773 into the lower socket marked U6A. Place ROM labeled 391774 into the upper socket marked U6B. Please note that the orientation of the notches must match! The sockets are also larger than the actual KickstartTM ROMs. The unused contacts remain free on the left hand side (nearest the ROM's notch)
6 Ensure that the fragile legs of the ROM chips are not bent during installation and make good contact with the receiving sockets. The ROM chips should be installed level with minimal gap between them and the sockets.
7 Reassemble your Amiga.
Next time you know what Amiga store to go to ;-)
