I bought a new Uno yesterday, and it would not accept an upload. I tried it on both Windows 7 x64 SP1 and Windows XP sp3 using Arduino-1.0.1 . I have an older Duemilanova, which I was able to upload on XP and Win 7. After uploading on the Duemilanova, I switched the cable back to the Uno but forgot …

Uno will not upload at 115200 Baud

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