Upgrading to latest PB

Within WP update window I get the following error:


The update process is starting. This process may take a while on some hosts, so please be patient.

Enabling Maintenance mode…
Updating Plugin Pressbooks (1/1)

Downloading update from https://github-production-release-asset-2e65be.s3.amazonaws.com/9209369/12df7ce0-842f-11e7-9965-2d2c79098d31?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20170821%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20170821T053248Z&X-Amz-Expires=300&X-Amz-Signature=1d79adc50c67f5c0a0d4eee491a3593ed70b34fcc7f6912e6a32fe0b313c5f65&X-Amz-SignedHeaders=host&actor_id=0&response-content-disposition=attachment%3B%20filename%3Dpressbooks-4.1.0.zip&response-content-type=application%2Foctet-stream…

An error occurred while updating Pressbooks: Download failed. Forbidden


Not sure why this is happening?

No idea. Have you been able to update successfully?

Yes via FTP only: Hiding old Pressbooks folder > Extracting PB Zip file > Verifying Plugins list > Deleting hidden old Pressbooks folder.

GitHub was having connectivity issues on Monday, which probably caused the issue you were having.