Unable to download JetBot software image

Kits
1

From the page at https://learn.sparkfun.com/tutorials/as … rom-nvidia

I am clicking on the link mid-page to Download SparkFun’s JetBot Image: https://static.sparkfun.com/large/spark … v01-00.zip

The file downloads, however it will not unzip. I’ve tried from a couple of different computers running various browsers all with the same results.

Thanks,

Mitch

2

This is what I get when I attempt to unzip the archive:

Archive: sparkfun_jetbot_v01-00.zip

warning [sparkfun_jetbot_v01-00.zip]: 4804908993 extra bytes at beginning or within zipfile

(attempting to process anyway)

error [sparkfun_jetbot_v01-00.zip]: start of central directory not found;

zipfile corrupt.

(please check that you have transferred or created the zipfile in the

appropriate BINARY mode and that you have compiled UnZip properly)

3

Hello Mitch,

On my Windows 10 machine, I’ve unzipped the file successfully. Are you using a command-line tool? Are you using something other than Windows 10?

4

Hi Mitch.

It sounds like you’re downloading the file OK and you should end up with a file that Widows reports as 8,886,599 KB in size. The built in Windows ‘Extract All’ unzipper will extract this file, but because of the size of the zip file and the fact the extracted image is 60 gigabytes in size, not every unzipping utility is able to extract it without an error.

Untitled.jpg
(Using Windows built in unzipper.)

If you want to double check the integrity of the downloaded file you can use a MD5 checksum calculator like Microsoft’s [File Checksum Integrity Verifier or a utility like [WinMD5Free to compute a checksum. You should be seeing the following as a checksum on the zip:

4f1209f50a366416da22abb959e916f6

If you’re getting that, the file downloaded properly and the utility you’re using to unzip it just can’t handle the file size.

Other unzipping utilities that have been found to work are:

  • - [[7Zip](https://www.7-zip.org/)
  • - [[WinZip for PC](https://www.winzip.com/win/en/)
  • - [[WinZip for Mac](https://www.winzip.com/mac/en/winzip.html)
    • [/list]

    If you want to check the extracted .img file, the MD5 checksum for that is:

    26f7f0af07c6f1f095fa4483b7003942](WinZip Mac Edition – The Zip File Utility for Mac Users)](WinZip for Windows - Zip Files, Unzip Files)](https://www.7-zip.org/)](https://www.winmd5.com/)](https://www.microsoft.com/en-us/download/details.aspx?id=11533)

    5

    Well, thank you both. I wanted to circle back and let you know what was happening.

    I’m on a Mac, and I was getting the full file. It turns out the built-in version of unzip with my version of Mac OS cannot process a file of this size and throws up a generic error. I dowloaded WinZip and the file decompressed. I was also able to rewrite the mini SD card and get the JetBot up and running.

    I appreciate your assistance.

    Mitch