Here is a list of Balsa Releases:

Balsa beta-1

Based on Xubuntu 10.04 (lucid)

Release date

21-Jul-2011

Filename(s):

balsa-1.0-lucid-beta-1-4gb.img.7z
balsa-1.0-lucid-beta-1-8gb.img.7z

Notes:

The released files are compressed with 7-Zip and are image files for the Balsa device. Instructions for installing it on a machine are available on the Quick Start page.

Links:

For a 4 gigabyte SD card (MD5:f618688b4413a160ac75d19b37c828c3)
For a 8 gigabyte SD card (MD5:b9de5582109f6ebd0cdc209742d793df)

Balsa alpha-1

Based on: Xubuntu 9.04 (jaunty)

Release dates:

compressed img files: 01-Sep-2011
original tbz2: 10-Aug-2010

Filename(s):

balsa-0.6-jaunty-alpha-1-4gb.img.7z
balsa-0.6-jaunty-alpha-1-8gb.img.7z
balsa-0.6-jaunty.tbz2

Notes:

This release works on an OLPC XO-computer. The released files .7z files are compressed with 7-Zip and are image files for the Balsa device. Instructions for installing it on a machine are available on the XO release page.

The released .tbz2 is the balsa image as a tarball. The tarball needs an SD card with a partition named BalsaRoot that is formatted with a Linux ext3 file system (Use one of the .7z files they're easier).

Links:

For a 4 gigabyte SD card (MD5: 66bb3b5484d96ade775aa5bdae307ea8)
For a 8 gigabyte SD card (MD5: 23f1493dda948a427197d8302f829c5e)
For a tarball (MD5:d5e2a3f8aec722cb4304983b1589d151)

Balsa XO pre-alpha

Based on: Xubuntu 8.10 (intrepid)

Release date - 21-Jul-2011

Filename: xo-balsa-0.5.tbz2

The released file is a bzipped tarball for an SD card with an ext3 partition.