Just wanted to report that my replacement kobo is working fine. I do notice that I have ghosting artifacts sometimes. Using my sleepcover to refresh the screen removes the ghosting but seems to me the current firmware has a refresh bug? It's my first e-reader so perhaps it's normal. Read that I can set the kobo to refresh each page but need to see if it's worth it. No big issue though and the wholes in the e-paper are gone
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