comic book app reader that reads 'Unsupported 7-zip archive format

[astro]

@Reply

You could probably get 7-zip on your laptop, extract it, and then recompress it into a standard zip.

http://www.7-zip.org/

cbz is just a compressed file full of images. 7zip is a compression format (and program), not as widely supported as standard zip.

What Reply said. CBR and CBz files are just standard issue zip/rar files with the extension changed. Extract and re-zip with WinRAR, winzip or similar.