That board use to be mine. It has the upgraded ROM chip already. The chip in the envelope is the old ROM chip. It does not have the large memory upgrade. That required some PAL chips to be changed on the board and at the time some very expensive memory.
Largest SIMMS you can use are 4 mb believe.
To do the upgrade would require the PALS and the code to program them. I would not put the old ROM chip on the board as it does not work with 060 and has a lot of bugs in it. I had told this all to you at the time I sold it to you.
It states this information in the manual I had given to you with the Phase 5 black box for the card.
Here is a good link for most of the information on the card.
http://amiga.resource.cx/exp/fastlane
