Well, the best and cheapest option is to get the already dumped v2.6 ROM from papa_november.
He even uploaded that file but the link went dead.
PM'ed him a couple of days ago, but he hasn't signed in since February...
I found a card with a slightly older ROM, v2.4 from 1992. 'Might' work with 7.1 but 2.6 works with both, so I think this is the version to go for.
In the meantime, I suggest we all get a ROM programmer if you don't already have one (I don't).
Oh and by the way, my cards looks a tad different: (picture courtesy of pcamen: THIS IS NOT MINE, I have a v1.0 ROM)
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View attachment 3243This one is slightly older as well, ©1989.