I replaced the my Uno Rev3 chip do a new one. It came with a pre-loaded bootloader and a default sketch that blinks. I uploaded a new sketch and it runned pretty good. But, when I turn the Uno OFF and ON again, the sketch that runs is the default one (that blinks) instead of the new one.
I looked forward directions, including parameters for changing the chips, but nothing solved the problem. I have 2 of them and both runs in the same way.
Any advice ? Thx in advance.