Hey @PopHarris3. I checked with a Square beta person that I communicate with regularly. This is what I learned.
This article should still be up-to-date
https://squareup.com/help/us/en/article/7777-process-card-payments-with-offline-mode
where Square Reader for Contactless and Chip
(1st gen, v3) still works but not v1-2 (which was deprecated/discontinued years ago).
Square Reader for Magstripe is still supported for swipe (which is the only capability)
I’ll add that there are a few active beta tests going on now to greatly enhance and harden the offline processing experience and I know those require the latest hardware. So, to answer your question, if you can do it I’d recommend upgrading to the latest readers when you can.
Chip A.
Square Expert & Innovator and member of the Square Champions group. (But NOT a Square employee, just a seller like you)
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