New ATMega328P chip

Official Hardware UNO Family UNO R3
1

Hi Team:

I replaced the ATMega328P chip on my Arduino UNO with a new one (virgin), how do I upload the firmware to the new chip? Can you guide me where to read documentation to solve this problem?

Many thanks in advance to the entire community!

2

See e.g. https://support.arduino.cc/hc/en-us/articles/4841602539164-Burn-the-bootloader-on-UNO-Mega-and-classic-Nano-using-another-Arduino.

You'll need a programmer or, as in the link, a second Arduino that can act as a programmer.

3

Do you mean the 328PB or the 328P

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