kindlegen v2.9 minor version-upgrade? or sha256 wrong?

[kun432]

Thanks for awesome work!

I've tried to install KindleGen a few times, but always SHA2 mismatched.

$ brew cask install kindlegen
==> Downloading https://kindlegen.s3.amazonaws.com/KindleGen_Mac_i386_v2_9.zip
######################################################################## 100.0%
==> Note: running "brew update" may fix checksum errors
Error: SHA2 mismatch
Expected: e09ad8f985c7096556f978df15903b71f9cf44d2e1f501139a420ff16931f980
Actual: 418e285c4dad907d920e040e81001736463a5b4b6aa22d58f623d99613cd2822
Archive: /Library/Caches/Homebrew/kindlegen-2.9.zip
To retry an incomplete download, remove the file above.

• "brew update && brew upgrade brew-cask && brew cleanup && brew cask cleanup" didn't fix this.
• download manually from "http://www.amazon.com/gp/feature.html?docId=1000765211", check SHA2 checksum. It is same as "Actual" above.

$ shasum -a 256 KindleGen_Mac_i386_v2_9.zip 
418e285c4dad907d920e040e81001736463a5b4b6aa22d58f623d99613cd2822  KindleGen_Mac_i386_v2_9.zip

• unzip and exec "kindlegen -release", seems works ok.

$ ./kindlegen -releasenotes

*************************************************************
 Amazon kindlegen(MAC OSX) V2.9 build 0730-890adc2 
 A command line e-book compiler 
 Copyright Amazon.com and its Affiliates 2013 
*************************************************************

 Release Notes:
    Check the latest release notes and known issues at https://kindlegen.s3.amazonaws.com/manual.html

[alebcay]

Seems like the Cask is just broken.

❯ cask audit --download kindlegen
==> Downloading https://kindlegen.s3.amazonaws.com/KindleGen_Mac_i386_v2_9.zip
######################################################################## 100.0%
==> Note: running "brew update" may fix checksum errors
audit for kindlegen: failed
 - download not possible: SHA2 mismatch
Expected: e09ad8f985c7096556f978df15903b71f9cf44d2e1f501139a420ff16931f980
Actual: 418e285c4dad907d920e040e81001736463a5b4b6aa22d58f623d99613cd2822
Archive: /Library/Caches/Homebrew/kindlegen-2.9.zip
To retry an incomplete download, remove the file above.
Error: audit failed

[rolandwalker]

I got the same and am amending.