Offline installation for Arduino Sam Boards core?

Development Tools IDE 1.x
1

Hi everyone,

I have met an issue when installing Arduino Sam Boards core for Arduino Due. I know we need to go to tools-board management-Arduino due-install, but it shows an error saying

Error downloading http://downloads.arduino.cc/package_index.json

From searching online this seems to be a network issue. I have tried different methods mentioned online such as deleting package_index.json.tmp etc and all failed to solve this problem.

Another error when installing Arduino SAM boards in board manager is:

Error downloading http://downloads.arduino.cc/gcc-arm-none-eabi=4.8.3-2014q1-windows.tar.gz

I tried to install this file by searching it online and unzipped, copy to Arduino folder. However I still cannot upload script despite in board manager it shows that Arduino SAM Boards INSTALLED and Due board being recognized. This error is:

exec: "/bin/arm-none-eabi-g++": file does not exist
Error compiling for board Arduino Due (Native USB Port).

Is there any offline installation for SAM Boards core available? Possible to install without board manager?

Any suggestions being appreciated!

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2

Here you go:
https://forum.arduino.cc/index.php?topic=463573.msg3480758#msg3480758

3

I tried installing the sam packet on a online machine and then take the "ArduinoData" file in the documents and put in on to offline machine where latest arduino ide is installed. Copy pasted the inside of "ArduinoData" file to the location pointed from the preferences (bottom...\arduino15). Paste everything except preferences txt from "ArduinoData". It worked for me.

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