Where can I find the file avrdude.conf in arduino 1.8.19?

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Hello everyone.
I am having recently some problems when trying to burn a bootloader with an Avr isp shield and an Arduino Mega 2560, I have found that the solution for many people is to change a value in the avrdude.conf file located here:

But I can't find the file anywhere I cannot even find the hardware folder, I tried to search it with the search bar in the file explorer but no results show up. In this problem is where I found the location of the file but as I said previously I can't find the hardware folder or the avrdude.conf file so I can't find the value to change and burn the bootloader, please help me with this. I just need where on earth I can find the file.

I have Windows 10 21H2 and Arduino 1.8.19 which I am not able to find on the Arduino software website but I just need the file. Thanks if you help

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Try this path
C:\Users\YourName\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17\etc

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can't find this folder I only have libraries

4

Try

C:\Program Files (x86)\Arduino\hardware\tools\avr\etc

5

same for that one as I said the only folder is libraries

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C:\Program Files (x86)\Arduino\

the only folder is libraries

If the only folder in the Arduino installation is libraries, something is wrong with the installation.

You should see something like this

Arduino Install
Arduino Install1567×821 131 KB

You may want to try remove the IDE and reinstall.

7

I installed the no-admin version, is this the issue?

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Did you download the Win7 and newer version from Arduino.cc?

I just did a clean install of 1.8.19. The contents of the .exe install folder are like what I showed previously.

Where do you see an option for no-admin version.

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oh sorry, the no-admin version appeared when I was searching for the 1.8.18 version and it appeared both of the options. Now that I remember I installed it from the Microsoft store I think.

10

I would install the version available at
https://www.arduino.cc/en/software

11

Hello again, I found the file and now I can change the signature, but now I can't find what is the atmega238u (that is the MCU that I have) signature, I know this is nothing to do with the problem title but if you know thanks if you answer.

12

Good progress on getting your IDE sorted out.

Please explain more about what mcu you have.

I have never seen reference to a atmega238u. Are you certain you are not transposing something and you have a ATmega328u which is a common chip, used in the Uno and Classic Nano.

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I would think you shouldn't need to modify the avrdude.con file. It should have correct values in it... check elsewhere....

You probably have the 328 type...

:smiley_cat:

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Here is the full definition that I see at the top of the MCU:

Atmel 35473D
Atmega328 U
2208GHE

That is everything I see in there do I need to send a photo of it? I don't think it's necessary but if you need it I will send it

I think the opposite, as I am programming a different type of MCU maybe it is needing the signature to recognize it, maybe I am wrong?

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I'm not certain what you are trying to do, but there may be alternative to modifying avrdude.conf

https://forum.arduino.cc/t/bootloading-a-atmega328-u-amel-35473d-via-an-uno-board-signature-error/703715

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I am trying to change a signature on the avrdude.conf file to burn the bootloader, because the signature is for an atmega328p and I don't have this MCU currently, so it is required to change the file to make it work. I can't find the atmega328u datasheet, and I can't find the signature as well. Not sure what to do

17

Did you try using MiniCore are recommended in the previous link?

If you enable Show verbose output during upload in Preferences, what is the detailed avrdude message? Is it returning device signature or not recognizing the device?

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