LineageOS 17.1 for the Sony Xperia 10 II

Please note this is currently for the dual-sim model ONLY. When you need a single-sim variant leave a comment, so we can work an that...

/*
 * Disclaimer - your warranty may be void.
 * 
 * I'm not responsible for bricked devices, dead OTGs or you getting fired because the alarm app failed.
 * Please do some research if you have any concerns about features included in this ROM
 * before flashing it! YOU are choosing to make these modifications, and if
 * you point the finger at me for messing up your device, I will laugh at you.
 */

Features

• OTA updates - always delayed for 1 day (to prevent broken rollouts); when you want it immediately, checkout my GitLab pipelines
• Increased volume steps to 25
• Over-provisioned system image (580MiB), to allow install of OpenGApps and other stuff
• Open Source (it is based on SODP, you can view all my patches and ci scripts here or here)
• Package signature spoofing (needed by MicroG)

What does not work?

• Stock camera app with wide and zoom cameras, you may use Open Camera to circumvent that.
• Notification LED blinking - kernel driver bug (see here)
• LiveDisplay
• You tell me...

Download

There you have multiple options:

• To get the complete package (both including the ota and img parts; only needed for the initial setup) visit...
  • AndroidFileHost
  • GitLab (make sure to download the artifacts from the master branch)
• To get ONLY the OTA package to update your system later on, visit (or open up the LineageOS Updater) ota.simonmicro.de - please note that only the last recent 14 days are accessible there.

Changelog

2021-02-28
Fixed wifi hotspot.

2020-12-18
Fixed cameras.

2020-11-27
Fixed ADB security.

2020-11-25
Added SELinux support.

2020-11-20
Added OpenGApps support.

2020-11-17
Initial release.

How to install your system

The following guide assumes, you have setup adb and fastboot already (make sure to always use the latest version of the toolkit, otherwise you'll may get problems during flashing) - for that take a look into the internet. Also you should already downloaded the complete package from above!

1. Unlock the bootloader - a "how to" is here...
2. Download the oem binaries from here, make sure to use exactly that version!
3. Boot into the bootloader (hold "Volume up + Insert the USB cable" until led lights blue) and then update the oem partition:

fastboot flash oem_a [EXTRACTED_OEM_IMAGE_FILE]
fastboot flash oem_b [EXTRACTED_OEM_IMAGE_FILE]

4. Flash now the Lineage recovery partition as well as the dtbo partition (they are inside the img folder of the complete package):

fastboot flash recovery [EXTRACTED_RECOVERY_IMAGE_FILE]
fastboot flash dtbo [EXTRACTED_DTBO_IMAGE_FILE]

5. Disable the verity checks for now, as your new recovery violates the Sony verity profiles of the Stock ROM:

fastboot flash --disable-verity --disable-verification vbmeta vbmeta.img
fastboot flash --disable-verity --disable-verification vbmeta_system vbmeta_system.img

6. Okay, you are now ready to boot the first time into the Lineage recovery, unplug the phone NOW!
7. To boot into recovery: Hold "Volume down + Power" until it vibrates...
8. You should now be booted into the recovery. We now clean any old data from Sonys Stock ROM - this is just to make sure you have a really clean install: Choose the "Factory reset" option.
9. The phone is now clean and ready to accept the new system. You now can either install just the OTA package and be done or flash every .img from the full package manually - the coice is yours. When you plan to flash the images manually, make sure to include boot, system, product, vendor, vbmeta_system, as these are normally part of the OTA update (I extracted the payload.bin to verify this!). For the latter approach you may orient yourself on my flashall.sh. I'll choose the simpler OTA-sideload approach for now.
10. Select "Apply update -> Apply from ADB" (now make sure the adb server runs as root - may use adb kill-server && sudo adb start-server to fix that) and execute (the OTA zip is inside the ota subdir):

adb sideload [OTA_SYSTEM_UPDATE_ZIP_FILENAME]

11. After installing the OTA, make sure to reboot your device to verify the update is indeed working. Also the update switches the slots, but the recovery needs to reboot to realize that - otherwise sideloading other stuff may won't work!

Something went wrong - help!

(Step 7-8) When you now see a device corrupt error:

• Don't panic!
• You messed up the verity disable step from before - try again.
• Try to switch the current boot slot (get current fastboot getvar current-slot and set new fastboot --set-active=, you can choose between a and b) and retry disableing verity disable again!
• When your device fails to boot too many times (and crashes) the current slot could also get marked as corrupt. To reset that counter you'll need to reflash the boot partition - to see what is going on, try fastboot getvar all and look out for something like a unbootable flag.

(Step 9) When you get Operation not permitted during flashing

This is commonly caused by relocking and then reunlocking the bootloader (yay - buggy firmware). You'll need to relock, restore (and boot) the device with Flashtool using Sonys original ROM and start from fresh.

(Step 10) When you get the kDownloadPayloadPubKeyVerificationError error

Well, that's caused by using an other recovery than the provided one, as I use my own private keys to sign the build the recovery must also know them. Using an other recovery than the one from the img folder of the complete package will most likely not include them (and when they do - I am in big trouble), and therefore fail. But you are in luck: It seems that the recovery writes the data to the currently inactive slot and then fails. You could simply switch the system slot like described above!

Want to install Magisk?

Install the Magisk zip like the OTA system update by using adb sideload [MAGISK_FILE_NAME].

Want to install OpenGApps?

Make sure to use the nano-variant (or the even smaller pico), as the system partition is even with over-provisioning really small (as the installer extracts some more stuff on the first boot) - then install the OpenGApps zip like the OTA system update by using adb sideload [OPENGAPPS_FILE_NAME].

Credits

As much I would like, I can't do everything by myself. A huge thank you to...

• @MartinX3 for the used local_manifests and his device tree from his LineageOS organization
• ...the team behind @sonyxperiadev, for their great work (and their kernel sources)!

Needed env vars for the CI - in case you want to run it yourself

• PERSISTENT_DATA_STORAGE -> path to a huge persistent drive (200GB at least)
• BUILD_PRIVATE_KEYS -> base64 encoded zip archive of the private keys for signing this build (represents ~/android-certs from here)
• DEPLOY_DIR -> remote path for the OTA api
• DEPLOY_HOST -> remote SSH host for the api
• SSH_PRIVATE_KEY -> remote SSH key for the api

To generate BUILD_PRIVATE_KEYS execute (skip any password request)...

subject='/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com'
mkdir ./PRIVATE_KEYS
for x in releasekey platform shared media networkstack testkey; do \
    ./development/tools/make_key ./PRIVATE_KEYS/$x "$subject"; \
done
zip -r PRIVATE_KEYS.zip PRIVATE_KEYS
base64 -w 0 PRIVATE_KEYS.zip > STORE_THIS_INTO_ENV_VAR_BUILD_PRIVATE_KEYS
rm -rfv PRIVATE_KEYS PRIVATE_KEYS.zip