We have just released a hotfix release v0.3.0 for Raspberry Pi and Raspberry Pi 2 receivers. This release only has one bugfix which is related to 404 errors when trying to access content. We recommend upgrading to this release instead of downgrading to a previous release.
The images can be found here:
Pi1: https://archive.outernet.is/images/ORxPi/0.3.0/
Pi2: We Moved!
Upgrade from 0.2.9 should just work. For older releases, you will need to make a new card.