Not sure what you mean regarding the accessory boards/widgets. This is the exact package I bought:
I bought the one with the extras since I wanted them for other things in the future, retro pcs etc, but none of them are needed for this purpose.
You never attempted to write the original Dallas chip right? Just read it once?
Somewhere on eevblog (and maybe in this group) people have posted their bin files, you can restore someone else's 2464B cal data to your new Dallas chip just to validate functionality/rule out the read from your old chip. I've seen posts from other people on forums of their old chips losing their data after being desoldered.
Good luck!!
