Short answer: yes, it works on all of them.
Long answer: "e200" stands for all of e250, e260, e270, e280 (hence "series"). There are two versions of each of these (v1 and v2, unsurprisingly). The v1s were "always" supported (they're basically all the same, just a different size of flash), support for the v2s is more recent, and these not being supported until half a year or so ago is probably what you remember.