Reflashing: Remove link to old blog post and video, mention enabling universe for Ubuntu
The blog post and video are both out of date:
- the blog post's instructions for installing dependencies are no longer accurate
- the video uses librem5-devkit-tools intead of librem5-flash-image
- both lack --stable
It's a nice video, but unfortunately linking to out of date content confuses users who may prefer to watch the video and then fail to flash their phone as a result.
The uuu package is in Universe for Ubuntu, which is not enabled by default.