Librem 5: System upgrade is undocumented
Almost immediately after turning of my Dogwood phone first time, the system notified me of available system update. At first I was puzzled at how to respond to the dialog - I was expecting to be able to tell it "ok, proceed now" but there was seemingly only choices of "wait" or "details" (or something similar - writing from fading memory here...). After a moment the dialog disappeared, and I thought "hmm, maybe doing nothing means accept" - but no, a little while later it popped up again, and this time I pressed the "details" option, where it offered to "restart and update" which I chose. Then a boot message, and then phone turned black. I waited a little while, then thought that maybe it had shut off and I should manually turn it of, so I did - but noticed that in doing so (holding down the power button for maybe 4 seconds) the previous "black" screen turned even more black, which I guess is an (very) sublt indication that I had instead turned off the system. I tried again, holding down the power button for a while and now got the boot animation, and again the system turned "black". ...and now I let it "do its thing" - and have waited for an hour now, with zero indication of any activity...
Locating at the last page of the Quick Start Guide a link to docs.puri.sm I looked for documentation of what I should have expected and how I should have acted, but failed to locate any documentation about system upgrade - only some notes about application updates which seems a different routine.
Keep in mind that above is not the bugreport - it is a confusion over whether or not ther is a bug to reported or not, because documentation lack a description of what to expect from that upgrade dialog.
In short: Seems the documentation for Librem 5 is missing coverage of system upgrades.