Hi all,
and big thanks to Sjll to open th XZ2 to the free world.
I recently got a new (used) XZ2. Target is to run LOS (no gapps (yet), no stock cam, no root) that works with wifi calling.
Current issue: Wifi calling did work once, and then no more. #
Here's what I did (collected wisdom from the entire thread, kudos to all that contributed).
0) Basics:
vol up and usb -> fastboot (first red then blue led)
vol down and usb -> adb / recovery
1) Open Bootloader:
developer.sony.com
Your unlock code for (IMEI)
xxxxxxxxxxxxx
Boot device
7*Build > Developer
allow OEM on
USB Debugging on
adb devices (works)
adb reboot fastboot (Oder Vol up und USB IN)
fastboot devices (works)
as of
https://wiki.lineageos.org/devices/akari/install
fastboot oem unlock xxxxxxxxxxxxx
OKAY [ 83.385s]
finished. total time: 83.385s
fastboot reboot
2) Get to a clean clean version
download EMMA (Flash Tool) from here
developer.sony.com
vol down and usb und start EMMA
flash latest software update (Erases User data)
restart and reconfigure
USB Debugging on
adb devices works
check if VOLTE aka Wifi Calling works! (It did work with my Vodafone SIM)
3) Install TWRP and LOS
download vbmeta.img from here drive.google.com/file/d/1ucpo6om5rgXdIK38xXiK0kEkI1cXWXCd/view?usp=sharing
adb reboot bootloader
fastboot devices
does not work: fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
fastboot flash vbmeta vbmeta.img
fastboot flash boot twrp-akari-20201013.img
usb out
Volume Down + Power on
usb in
TWRP:
advanced / adb sideload
command:
adb sideload copy-partitions-20210323_1922.zip
TWRP
Factory reset
delete davlik system data internal
format data
command
adb push lineage-17.1-20210324-nightly-akari-signed.zip /sdcard
adb push twrp-akari-20201013.img /sdcard
twrp:
Install lineage-17.1-20210324-nightly-akari-signed.zip (into inactive slot, maybe a)
reboot to recovery
TWRP:
Install lineage-17.1-20210324-nightly-akari-signed.zip (into other slot, maybe b)
Reboot to System
-> LOS boots fine.
Test Update to a newer LOS in Settings:
-> works
Now Wifi Calling did work one time - and then stopped.
Even ther is stable wifi, and the configuration states to prefer wife, it does not use it.
Where is this config stored? did something get lost when I
delete davlik system data internal in TWRP?