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Title: 1 GB MicroSD card in Garmin GSMAP 60CSx
Review: Installed the card in the 60CSx and attempted to download about 500 MB from CNNA V.8. Made several unsuccessful attempts and decided that the card was defective. Purchased a second card and got the same results. Realized now that the cards were fine but something in the 60CSx was preventing the download. Garmin said the largest card they had tested so far was 256 MB. That being the case, I used a card reader and downloaded to the card in the card reader. Then, I installed the card in the 60CSx and that worked fine. I now have the entire Eastern US loaded in my GPS and the card works perfectly.
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