I’m sorry, we think we have fix the bootloader problem On November 3rd.
But it has appeared again.
Please Try the new method to fix the problem.
First put the package to your disk:
D:\Program Files\FixSeeeduino_v328
And run the avrdude-GUI.exe
fixed as the pdf shows, page 2 is the avrdude-GUI method.
please read the fuse first, and tell us the fuse configure.
thank you very much
Albert
FixSeeeduino_v328.zip (232 KB)