In my U3S I smoked the original ATMEGA328P by accidentally applying 13.8V.
I do have blank 328Ps fyling around but am unclear about the .eep file that matches the latest firmware.
The latest firmware upload is V3.12a.hex. But there is not .eep file with the same version.
Does that mean that the latest firmware does not need an eeprom file or does it mean I shall use 3.09a.eep together with the 3.12a.hex ?