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I got the same issue, on two boards. Will probably try to burn the bootloader using usbasp, maybe they burned the wrong one back in china. EDIT: As expected flashing the micronucleus bootloader using USBasp solved the problem on both of the boards. I've used burn-o-mat as the arduino was not seeing my programmer. Just download the firmware from github (I'...


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Bootloader is poorly programmers it hand overs the overall hardware to user code,many people encounter error when uploading sketch second time. Well i have solution though it may sound wears but it works for sure "1.Disconnect board from USB , 2.Hit upload button., 3.Timout timer starts for 60 seconds. 4. Go ahead plug board to USB 5. CONGRATULATIONS" thank ...


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