Now (at least as an “experimental”)
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I’ll copy this here, just in case:
Upgrading to 15.1
We’re starting our 15.1 builds with some devices (listed below), with others migrating to 15.1 sooner or later. Note that several older devices are unable to receive official builds at this time due to the lack of support for working HAL1 camera recorder, which was broken by the treble changes, but don’t worry - we’re working on it.
From official LineageOS 14.1
- (Optional) Make a backup of your important data
- Download the build either from download portal or built in updater app
- You can export the downloaded package to the sdcard from the Updater app by long-pressing it and then selecting “Export” on the top menu
- Download proper addons packages (GApps, su…) for Oreo 8.1 (8.0 packages are not compatible).
- Make sure your recovery and firmware are up to date
- Boot into recovery mode
- Format your system partition
- Install the LineageOS 15.1 build, then install all your addons WITHOUT rebooting
- When you’re done, reboot the device.
Note that:
- Wiping data is not needed when upgrading from an official build
- While you’ll be able to download the update from the updater app, you won’t be allowed to install a 15.1 build on the top of a 14.1 one automatically
From anything else (including unofficial LineageOS builds)
- (Optional) Make a backup of your important data
- Download the build from download portal
- Download proper addons packages (GApps, su…) for Oreo 8.1 (8.0 packages are not compatible)
- Make sure your recovery and firmware are up to date
- Boot into recovery mode and wipe data
- Install the LineageOS 15.1 build, then install all your addons without rebooting
- When you’re done, reboot the device
Note that wipe data is always needed when coming from something that’s not an official build, regardless of the Android version
Source: Lineage OS blog, Changelog 16 - Smart Styles, Treble is trouble and Omfg Oreo – LineageOS – LineageOS Android Distribution
12 Likes
The build is flagged as experimental, as it is done outside the normal build schedule. I asked to get a build before the schedule just to ensure that it builds also on the lineage servers and test upgrades. Nothing else is experimental - no other code.
You can flash this build through twrp as an upgrade from 14.1 without wipe (but don’t forget to flash new gapps directly after without reboot). It will not show up as an available update on the phone. When you have flashed this, you will no longer see lineage updates. The next official build must be flashed manually again through twrp. Then you will see updates again whenever theres a new lineage build.
Happy testing. This one allows testing the 14.1->15.1 upgrade (regardless of encrypted or not).
If you upgrade from my previous unofficial builds, you need to wipe or do key migration (see
https://wiki.lineageos.org/signing_builds.html).
Chris
9 Likes
I tried (and failed) to migrate from unofficial to official build. I’m back on the unofficial
I used the migration zip from @z3ntu from 14.1
Anyone else tried and had success? I’ll follow the wiki when I’ve got time unless there is another solution
When I did the update (lineage-15.1-20180809-experimental-FP2-signed.zip) with the charger connected, it took forever.
Repeated the upgrade (after the initial situation was restored) without the charger: Took 3-4 minutes.
Possibly this has a relation? Unfortunately, debugging with adb logcat is apparently not possible in the boot phase.
Exchange (ActiveSync) has disappeared / I can no longer use it. Has that been removed? I found this.
I installed the latest version by wiping and installing new. But G***le Maps still won’t work. I can also not delete files in Amaze or LeafPic (Picture browser), nor is the Contacts app showing my contacts, my other dialer app is… Funny.
BUT… I will all get it fixed at the #EFCT18 next week. I’m counting on my 
Vienna Angels. 
2 Likes
I just noticed these artifacts in the Google photos app in the picture overview. Definitely never saw that on 14.1…
Exchange from Google gmail?
Chris
Are these new photos taken with O? Full photo view works? Built in gallery has same issue?
Chris
You basically just have to run a script before rebooting to recovery to install the new version. The script is mentioned in the Lineage wiki. I did it that way.
Chris
1 Like
You might want to post logcat after the long boot is over?
Chris
Taken with 14.1, full photo view works, gallery works too
After a bit of fiddling I managed to get it working and now I’m migrated… it didn’t work for me with the previously mentioned zip though.
Yay 
1 Like
Hmm, up to now I couldn’t get experimental running. I’m coming from 14.1 encrypted. I even tried wiping data (installing LOS, su and opengapps), but it didn’t help. After running for 30m nothing happened.
I need my phone, next tries will be pure LOS with data wiped, starting with small steps…
Latest twrp?
Opengapps for 15.1?
Chris
open_gapps-arm-8.1-pico-20180810.zip
I also tried the version from 3rd, just to be sure… I have around 200 apps, maybe it needs more time than 40m the first time?
In LOS 14.1 it was possible to directly connect an Exchange account with Settings > Account > “Exchange”. Now only “Private (IMAP)” and “Private (POP3)” are available.
Yes, I also find the link about Exchange in connection with Google confusing.
@chrmhoffmann Is the ROM pre-odexed? That would be an issue for patching it with tingle to get signature spoofing permission for microg.org. Tingle (and any other available patcher, I guess, @ale5000) only supports non pre-odexed ROMs, :S
FYI: Obviously Lineage for microG will still work because it builds the ROM from source with the required permissions, but modding an official LOS ROM is still more flexible —and always will be. Modding also doesn’t come up with more nasty trust-your-builder issues, since Android can’t be built reproducibly.
Hi,
indeed, yes, lineage 15.1 does not yet have the exchange connector ready. It’s a work-in-progress.
Maybe workaround: If you use google apps, you can use gmail to connect to exchange.
Chris
2 Likes