There are two ways to replace the CPC 464 ROM chip.<BR>
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:* A. While everything is switched off and if you have the right set of tools and have any electrical knowledge, remove six screws from the keyboard and carefully take the keyboard a part. Look for the CPC 464 ROM chip with the letters printed "IC103 AMSTRAD 40009" which is already soldered onto the motherboard. Here comes a real challenge.... <BR>::<BR>::Firstly, you have to remove additional nine screw using a philips screwdriver. And then, you have to de-soldier all the legs from the CPC 464 ROM chip, remove it and replace with [http://www.maplin.co.uk/p/dual-in-line-socket-28-pin-bl21x DIL Socket 28-Pin] (Maplin ref no: BL21X, which it costs about 14p each - current price is now 44p each), making it easier to swap 464 or 6128 ROMs and visa versa, then solder all the legs from that socket onto the motherbaord.<BR>::<BR>::Next, put the CPC 6128 ROM chip printed "AMSTRAD 40025 8902 B" inside the DIL 28-way socket. Put all the bits into place, put the keyboard cover back on and then put six screws back on. Now to test your handy work... After your computer powered up with all accessories, your screen should show exactly the same as [[Media:Cpc6128.gif|CPC 6128 start-up]] screen.<BR>
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:'''NOTE: ''' All versions of [http://www.old-computers.com/museum/computer.asp?st=1&c=84 CPC 464] keyboards including Arnold 1 (according to [http://genesis8.free.fr/amstrad/faq/amstrad.php#A comp.sys.amstrad.8bit FAQ]) version with big "AMSTRAD" letters printed onto the keyboard, like the one shown on the [http://www.old-computers.com/museum/photos/s_amstrad_464_inside1.jpg photo] - #'''12''': 32 Kb ROM memory containing the operating system and Locomotive Basic. Also with the "[http://cpctech.cpc-live.com/docs/costdown.html Cost-Down]" version as well doesn't have a socket to remove and replace Operating System ROM chips, instead all the legs are soldiered on and its impossible to remote it straight away, unless you know how to de-soldier - 31/6/05.<BR>::<BR>::* B. Simply exchange your CPC 464 keyboard to Amstrad Specialist ([https://web.archive.org/web/20100201160217/http://www.midnight.uk.com:80/merline/ ArthurCook]) for another CPC 464 keyboard with CPC 6128 ROM chip fitted (That's what I did on 12with [[Computer_Collection_Gallery#17th_June_2000.2A_-10-00_expanded_to_CPC_6128_spec._.288.29|mine]] on Thursday 12th Oct 2000, by the way, as while I was rushing to get home from Worthing and that time, I didn't know how to replace Operating System ROMs) or ask him to do it for you and paid for it, of course. <BR>
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= Step 2 =
Now you have a choice to do one of the following options:<BR>
