Upgrading from *official* 14.1 to 15.1 (feedback/issues)

Since upgrading to 15.1, I notice that my K-9 Mail sometimes has the status “synchronization disabled”. I haven’t had that at 14.1 yet. Has anyone had a similar experience?
Workaround: Disable- and Enable mobile data.

I also observed this with 14.1, since adding K9 as an exception in battery saving optimisation it never happened again.


I can make photo’s, but can’t record video’s, “could not start media recorder can’t start video recording” is the error. Anyone facing the same issues?


Thank you very much for the info!! Will wait fort an update then

K-9 development is rather stalled.

p≡p is a K-9 fork with material design and opportunistic GPG. Works fine for me on Oreo thus far.

EDIT: It is free on F-Droid, btw.

1 Like

This doesn’t look stalled IMHO: https://github.com/k9mail/k-9/commits/master


Hi. I tried to update Official LineageOS 14.1 to 15.1 via TWRP following instructions founded
First time I wiped system and cache before flashing, but I got endless loop on system reboot.
Second time I wipe data too, but still got endless loop on system reboot.
I tried to restore the backup I had done previously, but I got un error.
Tried again after a fresh dowload and SHA256 verification, but still endless loop until battery go down…
May someone help me please?

Great job done, thanks to all, especially @chrmhoffmann !

My upgrade didn’t run so smoothly yet:

  1. installed twrp-3.2.3-0-FP2.img
    Then in TWRP:
  2. wiped system, cache, dalvik
  3. installed lineage-15.1-20180813-nightly-FP2-signed.zip and open_gapps-arm-8.1-nano-20180815.zip
  4. Reboot to system,
  5. My FP2 is encrypted, so after a short time I entered the decryption PIN
  6. Reboot continued, but didn’t end
    After > 60 minutes I rebooted again into recovery.
    This time I swiped almost all (system, cache, dalvik, and also data), and again did the installation of LOS and GAPPS.
    Now the reboot finished after around 4-5 minutes, with a fresh LOS 15.1, without any apps installed.
    As I my FP is also my business phone I need again today, I restored yesterday back to LOS14.1.

I’ve read that @lklaus faced something similar, and continued later with wiped data partition.
Has anyone had the same experience, and might give some advice?

Later this afternoon I’ll try again to run the upgrade.

This does look stalled to me:

35 pull requests?

The last release was a pre-release on April 2 2018?

Plus, as I said, it doesn’t have material design. You just need to see the interface to know how out of date this software is. Its like from pre-2015. Terrible.

To each their own, but this is why I prefer pEp. Which seems to work well on Oreo, so its worth mentioning.

Was your FP2 on the charger? If yes, do the reboot without charger with full battery.

Yes, it was on the charger. Thx for the hint, I’ll try it without.

Judging a project by their opened PRs is superficial, honestly. Specially for a a non-lucrative, independent, open-source project run by volunteers. Definitely not fair. Latest commit 2 days ago, BTW.

Again, superficial. C’mon, user interface is outdated, sure, but code isn’t. You can’t judge code by its UI: not all developers can (or should, anyway) build good UIs. Furthermore, K-9 mail is a quite developed fork of the AOSP pre-ICS era mail client. It’s quite the work to overhaul a UI of that age, specially on ever-changing Android.

BTW, pEp is built on top of K-9. They deserve some respect for that quantity of years working on such a good software, no matter if you like their UI or not.


I tried both, before the full wipe, but it didn’t help

2 posts were split to a new topic: LOS 15.1 Settings app crashes

pEp is based on K-9. The K-9 developers could just import pEp’s UI changes. They don’t, for whatever reason. Hence why I say, consider the fork. Its completely reasonable to suggest that.

Did the upgrade now without connection to the charger.
The installation finished after 5-6 minutes, all fine now :+1:

No issues so far, I’ll continue testing.

Again, you’ve done a great job, thx for this!

After a few days of testing, I figured that I have one big problem.

Since I updated, my FP2 to LOS 15.1, I can get only “E” connexion, no more H or H+ either LTE where I could before updating. (I also tried with another phone)

Is it a known issue ?

Sorry, but my FP2 and me are going crazy. I can not use my phone anymore: I can’t boot in LOS 15.1, nor restore or downgrade to 14.1.
I wiped system, dalvik, cache and data, flash again LOS 14.1 and got error 7 in TWRP.
I tried to restore my NAND backup, and got error 255.
I never got this kind of problems. Some help, please!

I made an upgrade from 14.1 with magisc 16.0 as root and systemless xposed.
after the recognition of a stupid error in the process (i forgot to disable xposed for nugat in magisc manager before updating -> that produced a bootloop) everything went quite well.
i formatet the system partition and installed in twrp lineage, gapps & magisc in one batch and the phone booted in about 4-5 Min.

At first it seems that everything was working as before, alle the former data was there, but then i recognized that there are some issues with installing (xposed) “unknown” apps. (new oreo settings were set for xposed manager) even installing via adb install wasnt possible…

All that wasn’t the case with the lineage root module.
I’m not sure but it seems that there issues with magisc and oreo on some roms. On XDA is a explanation what is maybe wrong here: https://forum.xda-developers.com/showpost.php?p=76265320&postcount=1615

Conclusion: Magisc (16.0 stable or 16.7 beta) + Lineage offical build from 20180813 are not usable at the moment.