I had been enthusiastic about Murena and e/OS offering a simple proposition for tech un-savvy users to have a degoogled, privacy oriented mobile phone, so some year ago I got a Murena Teracube 2e with e/OS pre-installed.
Using and updating all going fine. Then last week, this happened:
I had my device update e/os to v1.16. During the reboot after the update, the splash screen showed this message:
" Your Device Is Corrupt. It can’t be trusted and may not work properly. […]"
… and failed to boot up, (even when ignoring the message, by pressing start button)
Every attempt at sideloading to resolve this issue failed in the recovery mode of the boot menu, so before being able to actually sideload anything. So I finally did a factory reset, loosing all and everything on the device.
The factory reset did solve the boot/corruption issue - device booted as it should.
Next, updated again to the latest e/os v1.18 from the update menu. But rebooting again shows the device is corrupted (same message on splash screen), leading me to conclude the updates since v1.16 somehow cause corruption.
This time however, ignoring the ‘corruption’- message by pressing start does lead to a succesful boot. So I could technically use my device again.
Questions: How can this happen in the first place after a reqularly executed update?! How can the apparent corruption from the e/OS update be solved? Can I trust my device, or what are the consequences of ignoring the ‘corruption’-message?
Kindly requesting your assistance.
(I am a tech noob simply valueing privacy. I have had a hard time - not - understanding all the versions and variations that are going around between murena, teracube, e/os/, android, lineage os(???), et cetera.)
Thanx @aibd for the helpful postlink and your responses. I still have trouble understanding what Google has yet to do with it, as I bought this phone off Murena directly with e/OS installed out of the box.
Also: What am I messing with when I update through the setting/update section, I do not get it? @aibd: did you imply you should have a tech skillset when you opt for something like e/os…?
(I am no tech, nor have the time, and this event leads me to think maybe I am in over my head and should write e/os off together with the compromised Terracube. )
Thank you @tcecyk. I read your technical words but must confess, only half understand what they mean. Yes, went from (I think) 1.14_stable to 1.16_stable, when the corruption happened. Then after factory reset updated to 1.18_stable, and it also said _emerald, and -s. I just press the update links that are offered in the menu, assuming they are for this phone, worked so far.
I will get in touch with Murena and include your hypothesis, thanx.