Just an FYI to anyone reading this:
Purism is actively making it difficult for its customers to receive a refund. Many of those customers have been waiting years for their phones.
Here's just one example I found scrolling through a list of complaints on the purism subreddit:
https://www.reddit.com/r/Purism/comments/syoydj/librem_5_ref...
That's a rare case because the user reports receiving a refund (only after a year and filing a complaint with their AG). There are many more complaints of users being told they have to wait until an unspecified shipping date to get a refund.
It is not ethical for a company to attempt to draw out or flat out refuse refunds to users who have been waiting years for a product. And while you are certainly free to hack away on their hardware, until/unless their business practices change you ought to be explicitly discouraging users from (attempting) to purchase a phone (or really, anything) from Purism.