Backblaze Release 4.0.2


Release Date: 5/12/2015
Version 4.0.2

Backblaze version 4.0.2 is out today! The latest Backblaze version is also becoming the minimum version of Backblaze that you can use. As part of this, a dialog has been added to the installer to protect against older installers being launched (they will now direct you to download the latest Backblaze version, 4.0.2 or higher).

Additionally, we have optimized large file retransmission, especially in cases where a user would have a slower internet connection. This should occur less often.

Finally, in the Mac OS X 10.10.4 beta release, the Locate My Computer feature was causing an issue that would use a lot of RAM. This was caused by Apple changing one of the paths that we used to calculate location, resulting in a loop. This has since been fixed and users running Mac OS X 10.10.4 and Backblaze 4.0.2 should no longer be experiencing RAM usage spikes.

Auto-updates will begin rolling out over the next few days. If you’d like the latest version now, please see below for instructions.

Backblaze Online Backup 4.0.2 Details:
Version: 4.0.2 for both Mac OS and Windows.
Availability: 5/12/2015
Cost: Free as an update for all Backblaze customers.
Upgrade Methods:

  • Immediately when performing a “Check for Updates” (right-click on the Backblaze icon).
  • Immediately as a download from
  • Immediately as the default download on

Questions: Please contact Backblaze Support at


About Yev

Yev Pusin is the senior director of Marketing and sometimes Marketing chief of staff at Backblaze, which he joined in 2011. Yev has a degree in business and communications from the University of Iowa, where he developed an alliteration affinity. Yev enjoys writing in an amusing way about the "why" of things and how decisions are made, so that readers can learn and be entertained all at once. Follow Yev on: Twitter: @YevP | LinkedIn: Yev Pusin