ATtinyCore installation failed due to expired tls certificate for azduino.com about attinycore

[roger-tannous]

It seems that the SSL certificate (from Let's Ecrypt) is expired.

I have faced the same problem, and fixed it like the below (as a temporary arrangement)::

On Linux/Mac,

sed -ri "s/https\:\/\/([^\"]+)/http\:\/\/\1/g" ~/.arduino15/package_drazzy.com_index.json

sed -ri "s/https\:\/\/([^\"]+)/http\:\/\/\1/g" ~/.arduino15/package_drazzy.json

On Windows, just edit the file(s) and change https to http for all URLs that are double quoted.

[roger-tannous]

It seems this issue has been handled in a different way previously, here's the link

[per1234]

Duplicate of #815

[samster395]

Taken from https://forum.arduino.cc/t/2-2-1-board-manager-download-additional-boards/1182930/28

The workaround will be to manually download the tool archive (the archive download URLs can be extracted from the package index file 12) and then place it in the Boards Manager download cache. Arduino IDE checks for the file in the cache before attempting to download it from the Internet, so if you have manually placed the file in that location, you avoid the problematic download that causes the ATTinyCore installation to fail.

1. Download the ATTinyCore:[email protected] Archive File
   Unfortunately you will likely find that attempting to download this file via the browser is not very user friendly. For security reasons, the browser will try to strongly discourage from downloading it and you will have to make some efforts to overcome its resistance.

This is the download URL:

If you are using Windows:
http://azduino.com/bin/micronucleus/micronucleus-cli-2.5-azd1b-x86_64-mingw32.zip
If you are using Linux x86:
http://azduino.com/bin/micronucleus/micronucleus-cli-2.5-azd1-x86_64-linux-gnu.tar.bz2
If you are using Linux ARM:
http://azduino.com/bin/micronucleus/micronucleus-cli-2.5-azd1-arm-linux-gnueabihf.tar.bz2
If you are using macOS:
http://azduino.com/bin/micronucleus/micronucleus-cli-2.5-azd1-x86_64-apple-darwin.tar.bz2
2. Add the Downloaded File to the Boards Manager Cache
After you manage to download the file, copy it to the following folder:

If you are using Windows:
C:\Users\<username>\AppData\Local\Arduino15\staging\packages\
(Where is your Windows username)

If you are using Linux:
/home/<username>/.arduino15/staging/packages/
(Where is your Linux username)

If you are using macOS:
/Users/<username>/Library/Arduino15/staging/packages/
(Where is your macOS username)

3. Install ATTinyCore
   Now try installing ATTinyCore via the Arduino IDE Boards Manager again. The installation should now be successful.

[schorsch3000]

How is this completed?
Nothing changed...

[hmeijdam]

How is this completed? Nothing changed...

Because it's a duplicate report of an already existing issue. That's what the "duplicate" label means.

[schorsch3000]

There are options :-)