Consider if the lifespan of atmega328 has been wear out.
It said on datasheet of atmega how many times we can upload sketch about 10.000times (cmiiw), should i change the arduino or only the microcontroller after 10.000 times have been arrive? what if that times has been arrive? What happened with that IC? If it will starting problem, can we change only the microcontroller (atmega328PU)?? Or any there's thing or stuff we must change too?
Should i burn the bootloader to that IC after replace it?