I found out my battery was the problem. I replaced it with my second battery and then the phone went back to the unresponsive state where it started but I could not enter the decryption password on the frozen screen.
From there I did the reflashing as decribed above.
So you might want to check your battery or use a spare if you ordered one (always have spare batteries, I have a spare and an extra spare so three in total of which one is now defect, pending Purism support instructions on how to proceed)
Im the wise and ordered an extra battery. But as long as librem 5 was working there seemed to be no problems at all with battery. Except for overheating with blinking light some times. But then I put the librem on my ice cold floor and temp went quickly down.
How do you connect the jumpdrive to the librem? Any computer, may it be macbook or windows whre i connected my librem was never shown as usb disk avalaible. Only charging.
I would think that there are very few people attempting to use Windows or Mac as their host computer with the Librem 5. So if you want easy access to assistance then you want a Linux computer.
That only happens if the Librem 5 boots the Jumpdrive software - which has to be loaded from a host computer to the Librem 5. For this purpose the host computer connects to the Librem 5 using a USB cable. (Any USB cable should suffice as long as it has a USB-C connector at the Librem 5 end and an appropriate connector at the host end.)
It has been pointed out to me that Purism has upstreamed a package called librem5-flash-image
So that dispenses completely with the need for git and that will also install the needed dependencies (uuu, usbutils and various python3* packages) if not already. On the other hand, it also means that for customers who are running a suitable version of a suitable distro, those instructions are even more out-of-date.
The only wrinkle is that I don’t know what version of each distro that Purism package first appeared in.
What I can confirm is that Ubuntu 22.04 LTS (jammy) does have that package. Based on the Ubuntu web site, it looks as if Ubuntu 20.04 LTS (focal) does not have that package. lunar (23.04) and mantic (23.10) also contain that package. noble (24.04) will contain that package, barring the unforeseen. So that covers all the supported Ubuntu releases.