Librem 5 Chats Not Updating

Output from lsb_release -c:
Codename: Amber

So the consensus here seems to be to reflash. The guides I have found for this are https://developer.puri.sm/Librem5/Development_Environment/Phone/Troubleshooting/Reflashing_the_Phone.html#download-the-flashing-scripts from Purism (no date on this) which I have successfully used once before, https://howtotrainyourrobot.com/re-flashing-the-librem-phone-with-byzantium/ which discusses the difference if you don’t have a very new L5 (which I don’t) or this from this forum New Post: Reflashing the Librem 5 which has a Jan 21 of this year date.

Opinions?
Some other worthy guide?