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[ZE620KL/Android 9][TREBLE] COMPLETE GUIDE: Unlocking, Rooting & Flash GSI + Fixes

[ZE620KL/Android 9][TREBLE] COMPLETE GUIDE: Unlocking, Rooting & Flash GSI + Fixes
Unlocking bootloader to Flashing GSI (Asus Zenfone 5 [ZE620KL] / Android 9.0)
Code:
/*
* Your warranty is now void.
*
* I am not responsible for bricked devices, dead SD cards,
* thermonuclear war, 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.
*/
About :
The last guide could leads to soft brick, as the instructions were not clear nor the files not supported for Android 9.0.
Here is a complete guide with TWRP 3.3.0 for Android 9.0, clear instructions and multiple fixes for GSI.
It has been tested on stock version v16.0615.1903.92.​
Requirements :
- A stock version V16.0610.XXXX.XX or higher
- A phone on Android 9.0 (not 8.0!)
- A fully working USB cable
- Latest ADB / Fastboot drivers
- Bootloader unlocker (download latest from Asus website or from here)
- TWRP 3.3.0 image
- Android9EncryptionDisablerZE620KL.zip
- Magisk v19.3​
Instructions :
Unlocking Bootloader
1. Backup all your important data.
2. Install the bootloader unlocker APK, and follow the steps. You will loss your warranty here, and it will factory reset your data
3. If there is any issue here, go into your stock recovery (volume down + power button) and factory reset.​
Installing TWRP
4. Shutdown your device & boot in fastboot mode using volume up + power button.
5. Check that the connection between your device and your computer by typing this in your command line :
Code:
fastboot devices
6. Flash TWRP recovery using :
Code:
fastboot flash recovery <twrp_name>.img
7. Now reboot in recovery mode using :
Code:
fastboot oem reboot-recovery
8. In TWRP, select Wipe > Format Data > enter "yes" and confirm
9. Return to the main menu, select Reboot > Recovery
10. Do 8. & 9. and again
11. Using TWRP or ADB, install Android9EncryptionDisablerZE620KL.zip (on TWRP, go into Install > find Android9EncryptionDisablerZE620KL.zip > Install zip)
If everything has gone successfully, you now have a custom recovery.
As for some GSIs, a patched boot partition may cause bootloop, you should try installing Magisk after installing the GSI. If you want to keep your stock ROM, go directly to "Magisk Installation" section.​Installing a GSI
This step may vary depending on the different GSIs distribution. I assume you install Havoc OS v2.7 GSI which actually works on this device.
1. Backup all your important data using TWRP backup.
2. Select the arm64-aonly GSI image you want, and move it on your external SD.
3. Wipe Data, Dalvik, and Cache.
4. Go back in the main menu of TWRP, and reboot to recovery.
5. Remove Magisk if it was previously installed, by using its uninstaller script.
6. Flash the GSI to system partition.
7. Boot and perform a factory reset.​
Installing Magisk
1. Add the Magisk zip archive to your external storage.
2. Boot into TWRP recovery, and install the zip.
3. Enjoy!​
Bug fixes:
Insufficient storage in the system partition to flash GApps : Download your OpenGApps archive on your external SD, and use MagicGApps 2018.9.23 to install GApps.
Auto-Brightness doesn't work: Download framework-res__auto_generated_rro.apk from here.
Using a root explorer or command-line, push the APK to /vendor/overlay.
Then run the following command in a rooted terminal or ADB shell:
Code:
chcon u:object_r:vendor_overlay_file:s0 /vendor/overlay;chcon u:object_r:vendor_overlay_file:s0 /vendor/overlay/framework-res__auto_generated_rro.apk
My camera doesn't work well (green tint on face camera) and/or the app doesn't boot: If Asus Camera doesn't launch on your GSI, you should probably edit your /system/build.prob file.
You need to edit ro.product.model, ro.product.brand, ro.product.name, ro.product.device, ro.product.manufacturer & ro.build.product properties to be:
Code:
ro.product.model=ASUS_X00QD
ro.product.brand=asus
ro.product.name=WW_Phone
ro.product.device=ASUS_X00QD
ro.product.manufacturer=asus
ro.build.product=ZE620KL
You can instead use Google Camera mod (port from Arnova8G2 & modded by 5Z community, thanks to them!), which works well (edit: there is a bug on HavocOS, we can't access settings).​Bonus:
- You can reinstall DTS Headphone:X here.
- For booting your kernel in Permissive mode, check here
Sources:
TWRP 3.3.0 : On GitHub
If you need help or if you want to help on ZE620KL development go here:
https://t.me/Zenfone5Dev
(We will continue to update & help here though.)
Many thanks to all of the Zenfone 5 community (particularly Emincan, Pandolfi and Lmajkej),
Phhusson & Erfan for their works on GSI, and Shakalaca for its work on TWRP 3.3.0!​

On HavocOS v2.8 GSI (13-08-2019):
It works:
- Almost anything
- Adaptive Brightness (after manual fix)
- Notch overlay
- DTS Headphone X (after manual installation)
- NFC
- Face unlock
- Stock camera (after manual fix)
- Magisk
- SDcard access
It doesn't works:
- VoLTE / VoWifi
- Google Camera settings
- External speaker amplifier (NXP amp)
- APT-X / APT-X HD bluetooth
- Low microphone in normal use
- No microphone in calls (only headphone microphone works)

GCam settings
But my google camera keep crashing when I want to go into camera settings

Hi thanks for this tutorial, this is my first time rooting my phone. I'm encountering a problem with my sd card after installing havoc os, everytime i try to move, save or any write functionality i do to my sd card, it always says the android version isn't compatible. I could still see my files from my sd, but everytime it asks permission it always say this

bentley0928 said:
But my google camera keep crashing when I want to go into camera settings
Click to expand...
Click to collapse
Same issue here. I will update the thread when I will find a more working GCam port (perhaps, this GCam port works well on ZenUI)
Jolo110 said:
Hi thanks for this tutorial, this is my first time rooting my phone. I'm encountering a problem with my sd card after installing havoc os, everytime i try to move, save or any write functionality i do to my sd card, it always says the android version isn't compatible. I could still see my files from my sd, but every time it asks permission it always say this
Click to expand...
Click to collapse
It's a known issue, the GSI maintainer @vince31fr is working on it. I don't have it, but I can advice you to use Solid File Manager, which works like a charm on my device.

"- No microphone in calls (only headphone microphone works)"
Funny... I'm on stock latest firmware and I have this issue, so I thought I try something new, and this has that issue. It can't be a coincidence. Something is ****ed up with this device.

Wonder if this will work for the Zenfone 5 Lite (or 5Q)? I wanna root my 5Q so bad haha

Thanks for the great instructions! Steps 1 through 11 worked perfectly for me, then I installed LineageOS (lineage-17.0-20191231-UNOFFICIAL-treble_arm64_avN.img) and it works properly. Then when I go back to TWRP and install Magisk v20.1 it reboots into an endless Lineage bootup logo animation (not boot loop). I can get an adb shell, but now also the external SD card has become invisible. Any suggestions?
UPDATE: I switched over to the patched Magisk version from PHH (https://forum.xda-developers.com/zenfone-5/general/ze620kl-add-support-to-evey-android-9-t3966918) and everything works perfectly now!

Hi!! I thanks for these instructions you gave. I know this post is a bit older. But is the only one I think could help me.
I got an ZE620KL and I'm trying to root this device. I have some experience in unlocking bootloader and rooting devices. But this one... Is giving me a lot of work. Researching in a lot of forums and websites I tried a lot of things with no success. In theory, is just install the official apk provided by ASUS and run the application. But the app doesn't work for a long time as I researched (error accusing network problem). I tried unlock via fastboot commands but I always got stucked by "remote: permission denied" even with latest drivers and ADB Fastboot installed. And yes... I let my device with no one security feature enabled and didn't worked. I tried everything even after wiped data / cache and factory reset and no progress.
In my researches, I realized something about 'oem unlock'. It appears to be the key to solve this. And I guess the tool to work with this is the damn unlock tool from ASUS which don't work! Also, I've heard about workaround with Magisk by flashing a custom recovery to achieve the root. Magisk no longer supports zip files to flash. Only '.img' and '.tar' files. I'd like to find some light here... I don't know what to do. I appreciate any help!

Hello do I need to flash Android9EncryptionDisablerZE620KL.zip if Im gonna flash a non-GSI custom ROM? Or its only for GSI Treble ROM?

[email protected] said:
Hi!! I thanks for these instructions you gave. I know this post is a bit older. But is the only one I think could help me.
I got an ZE620KL and I'm trying to root this device. I have some experience in unlocking bootloader and rooting devices. But this one... Is giving me a lot of work. Researching in a lot of forums and websites I tried a lot of things with no success. In theory, is just install the official apk provided by ASUS and run the application. But the app doesn't work for a long time as I researched (error accusing network problem). I tried unlock via fastboot commands but I always got stucked by "remote: permission denied" even with latest drivers and ADB Fastboot installed. And yes... I let my device with no one security feature enabled and didn't worked. I tried everything even after wiped data / cache and factory reset and no progress.
In my researches, I realized something about 'oem unlock'. It appears to be the key to solve this. And I guess the tool to work with this is the damn unlock tool from ASUS which don't work! Also, I've heard about workaround with Magisk by flashing a custom recovery to achieve the root. Magisk no longer supports zip files to flash. Only '.img' and '.tar' files. I'd like to find some light here... I don't know what to do. I appreciate any help!
Click to expand...
Click to collapse
Im not sure if you still have your phone or you have successfully unlocked bl. but I found an updated version of their tool which works.
*tried unlocking from android 10 not working, it says device model not supported*
Zenfone 5 Unlock BL

cf100clunk said:
Thanks for the great instructions! Steps 1 through 11 worked perfectly for me, then I installed LineageOS (lineage-17.0-20191231-UNOFFICIAL-treble_arm64_avN.img) and it works properly. Then when I go back to TWRP and install Magisk v20.1 it reboots into an endless Lineage bootup logo animation (not boot loop). I can get an adb shell, but now also the external SD card has become invisible. Any suggestions?
UPDATE: I switched over to the patched Magisk version from PHH (https://forum.xda-developers.com/zenfone-5/general/ze620kl-add-support-to-evey-android-9-t3966918) and everything works perfectly now!
Click to expand...
Click to collapse
Do you still have the patched Magisk zip file, the original link in the post seems not working

Question Gapps error 70, resize System Partition.

Hello.
After I received my new Poco f3, the first I've done was unlocking the bootloader. 7 days later, everything was done and I flashed lineageos.
>Fastboot boot twrp.img>advanced>flash current twrp.
After that I've wiped and format data. Then I flashed lineageos. After that I've tried to flash gapps, but that results in "error 70 Not enough space. I've tried pico and nano package. The question is now, how am I able resize the system partition ? I googled to find solutions but what I've found, just scared the sh*it out of me. Some people experimented with gparted and hardbricked their device, because they destroyed their bootloader.
In twrp>wipe>advanced wipe there is no system partition shown. Dunno why.
I didn't dare to >Fastboot erase system (Or Fastboot format system) before I flash los. Is this safe and could be a possible solution? I also don't understand how this "a/b" partitions Work. My old Poco f1 didn't had those.
would be really grateful for help.

Yeah this phone is really tricky to mod. I rooted mine and for some reason still didn't have write permissions on root folders.
Tried to delete lockscreen keys just for testing purposes and it messed up the phone. After that even twrp restore couldn't fix it. So I flashed the stock firmware via mi flash tool and locked the bootloader for good.
I find that what you get from rooting this phone is just not worth the risk with its tendency to mess things up really bad at the slightest mistakes, especially because the EDL is locked.
It used to be so simple with older phones. But unfortunately google is trying their best to make phones impossible to modify. And they're getting pretty close now.

user0u said:
I rooted mine and for some reason still didn't have write permissions on root folders.
Click to expand...
Click to collapse
I had the same problem. I've read that just flashing magisk.apk in twrp isn't supported well anymore. You have to modify boot.img in magisk app, and then flash the modified boot.img with Fastboot. For me, that solves the problem (see Instructions. To extract the boot.img from rom.zip I used Payload dumper ).
Long story short, I still didn't managed to resize the system partition

I got an other idea! Is it possible to "inject" gapps into the system.img before I flash it ?!

Did you ever figure it out?

According to installation guide by lineageOS, MindTheGapps is the recommended Gapps for android 11
Google apps | LineageOS Wiki
wiki.lineageos.org
Downloads for : -Android- Generic Device/Other | AndroidFileHost.com | Download GApps, Roms, Kernels, Themes, Firmware and more. Free file hosting for all Android developers.
Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.
androidfilehost.com
if you are gonna download MindTheGapps, then use the arm64 version

Fandroid Tech said:
Did you ever figure it out?
Click to expand...
Click to collapse
No, I just jused arrowos with the integrated gapps package. Maybe I will try the "mindthegapps" version in the next weeks and give feedback

I'm using orange fox recovery, bugged by this error when I flash opengapps after flashing lineage0s 18.1.
Following is what fixed the issue for me.
1. download latest firmware for the device
2. update zip from ofox recovery- with vendor partition mounted.
3. reboot to recovery and then flashed opengapps nano (this time check the flag for unmount vendor)

Updater process ended error 255 device code name is olivelite

I tried to install the evolution x rom on my Redmi 8A phone I can confirm that I downloaded the right file then proceed to flash it on orange fox recovery project (sideloaded it) then suddenly it throws back the error code
Updater process ended error : 255
Tried multiple times reflashed the recovery changing to twrp ( I used the official recovery) on my previous device I also experienced this problem and there was an unofficial twrp image that solved this they say it's because I tried to flash a 64 bit Rom on a 32 bit recovery plus I can't find any "64 bit" version for my device any help????

If you need any information comment it down I won't reply instantly but I will

Question Installation of LineageOS for MicroG does not work

Hi all, after have lost hours and hours traying to install the latest LineageOS for MicroG, I made a facotry reset of the Oneplus 9 Pro (to Android 11), than updated de devices to the latest update (incl. Android 12 and all avaiable updates) and THAN trayed to install LineageOS for MicroG following strictly the Manual of LineageOS (link). It seams to be perfect, until the first start of LIneageOS. I see the first setup screen (Welcome to LineageOS), on the left corner "Emergency call) and on the right the START button, but the screen doesent react andt on the upper right corner I see an empty battery icon. What can I do?? I'm at the end of my knowledge.
In a step of Installing LineageOS (without MicroG) it is necessary to install the dtbo and vendor boot partitions. Maybe the problem is here?
What I have installed:
- dtbo.img (20220823)
- vendor_boot.img (20220823)
- lineage-19.1-20220820-microG-lemonadep-recovery.img
- lineage-19.1-20220824-microG-lemonadep.zip
In Recovery I see "Version 19.1 (20220824)" is installed.

PS: The volume up and down button works...

(unwanted post)

enoironline said:
Hi all, after have lost hours and hours traying to install the latest LineageOS for MicroG, I made a facotry reset of the Oneplus 9 Pro (to Android 11), than updated de devices to the latest update (incl. Android 12 and all avaiable updates) and THAN trayed to install LineageOS for MicroG following strictly the Manual of LineageOS (link). It seams to be perfect, until the first start of LIneageOS. I see the first setup screen (Welcome to LineageOS), on the left corner "Emergency call) and on the right the START button, but the screen doesent react andt on the upper right corner I see an empty battery icon. What can I do?? I'm at the end of my knowledge.
In a step of Installing LineageOS (without MicroG) it is necessary to install the dtbo and vendor boot partitions. Maybe the problem is here?
What I have installed:
- dtbo.img (20220823)
- vendor_boot.img (20220823)
- lineage-19.1-20220820-microG-lemonadep-recovery.img
- lineage-19.1-20220824-microG-lemonadep.zip
In Recovery I see "Version 19.1 (20220824)" is installed.
Click to expand...
Click to collapse
boot is equivalent to recovery
you must be on lastest official firmware
there are also spare firmware you can flash to get aligned

Psk.It said:
boot is equivalent to recovery
you must be on lastest official firmware
there are also spare firmware you can flash to get aligned
Click to expand...
Click to collapse
How can I be on latest official firmware? Before installing LIneageOS for MicroG I installed all possible Updates of the stock Version of Oneplus, than during the installation process I installed the two vendor-files as described in the manual. Do you have links to the spare firmware or better Installation guides?

enoironline said:
How can I be on latest official firmware? Before installing LIneageOS for MicroG I installed all possible Updates of the stock Version of Oneplus, than during the installation process I installed the two vendor-files as described in the manual. Do you have links to the spare firmware or better Installation guides?
Click to expand...
Click to collapse
If you installed C62 (or latest version for your device) you should be OK
(you can try reading other rom theads, some have the link to spare firmware)
for set-up, i prefer taking dtbo, vendor_boot and boot images from payload.bin file already in the rom.zip (using payload_dumper tool)
once "preliminary set-up" is done, reboot to recovery, then format data and sideload the rom
if you need extra flashing (magisk, kernel, what else) reboot recovery and sideload it

Psk.It said:
If you installed C62 (or latest version for your device) you should be OK
(you can try reading other rom theads, some have the link to spare firmware)
for set-up, i prefer taking dtbo, vendor_boot and boot images from payload.bin file already in the rom.zip (using payload_dumper tool)
once "preliminary set-up" is done, reboot to recovery, then format data and sideload the rom
if you need extra flashing (magisk, kernel, what else) reboot recovery and sideload it
Click to expand...
Click to collapse
that is certainly purposeful, but much too difficult for my most modest knowledge.
Ironically, I installed the normal LineageOS without MicroG in the meantime (to be able to use the device) and it works reasonably stable. As soon as I know what I have to install additionally when, I'll probably do again first a factory reset to the original operating system of oneplus, all updates and then I try it again with lineageos for microG. Remains to be seen what else I need to install and when :-/ It's frustrating to cannot follow an official Installation guide without having souch issues.
I can't understand why it has to be so difficult and full of detours that one can't do it if one doesn't have in-depth knowledge. Really a pity.

enoironline said:
that is certainly purposeful, but much too difficult for my most modest knowledge.
Ironically, I installed the normal LineageOS without MicroG in the meantime (to be able to use the device) and it works reasonably stable. As soon as I know what I have to install additionally when, I'll probably do again first a factory reset to the original operating system of oneplus, all updates and then I try it again with lineageos for microG. Remains to be seen what else I need to install and when :-/ It's frustrating to cannot follow an official Installation guide without having souch issues.
I can't understand why it has to be so difficult and full of detours that one can't do it if one doesn't have in-depth knowledge. Really a pity.
Click to expand...
Click to collapse
unfortunately official lineage build does not support signature spoofing, this means you need gapps (Nick gapps is the most used , you can check-out also mind-gapps)
crDroid and riceOS are a couple of roms that allow signature spoofing, you will be abile.to run micrpG on those
about payload_dumper just google it, it's a tool for unpagkage images from the a rom file
about increase of complications, we all must thank you Google 1st and OnePlus (or Oppo) in second place

Psk.It said:
for set-up, i prefer taking dtbo, vendor_boot and boot images from payload.bin file already in the rom.zip (using payload_dumper tool)
once "preliminary set-up" is done, reboot to recovery, then format data and sideload the rom
if you need extra flashing (magisk, kernel, what else) reboot recovery and sideload it
Click to expand...
Click to collapse
I'm looking right now, interesting. You wrote, you prefer taking dtbo, vendor_boot AND Boot Images from payload.bin. When to load dtbo and vendor_boot is describet in the installation guide of lineageOS, but when do you use/install the from you mentioned boot image?

enoironline said:
I'm looking right now, interesting. You wrote, you prefer taking dtbo, vendor_boot AND Boot Images from payload.bin. When to load dtbo and vendor_boot is describet in the installation guide of lineageOS, but when do you use/install the from you mentioned boot image?
Click to expand...
Click to collapse
Instead of recovery
basically:
dump payload
flash btbo
flash vendor_boot
(someone suggest to reboot in fastboot)
flash boot
from fastboot menu go to recovery
finally sideload the zip

enoironline said:
Hi all, after have lost hours and hours traying to install the latest LineageOS for MicroG, I made a facotry reset of the Oneplus 9 Pro (to Android 11), than updated de devices to the latest update (incl. Android 12 and all avaiable updates) and THAN trayed to install LineageOS for MicroG following strictly the Manual of LineageOS (link). It seams to be perfect, until the first start of LIneageOS. I see the first setup screen (Welcome to LineageOS), on the left corner "Emergency call) and on the right the START button, but the screen doesent react andt on the upper right corner I see an empty battery icon. What can I do?? I'm at the end of my knowledge.
In a step of Installing LineageOS (without MicroG) it is necessary to install the dtbo and vendor boot partitions. Maybe the problem is here?
What I have installed:
- dtbo.img (20220823)
- vendor_boot.img (20220823)
- lineage-19.1-20220820-microG-lemonadep-recovery.img
- lineage-19.1-20220824-microG-lemonadep.zip
In Recovery I see "Version 19.1 (20220824)" is installed.
Click to expand...
Click to collapse
Hey just wanted you to know that I had the exact same problem, I posted about it here:
https://www.reddit.com/r/LineageOS/comments/wyr4v9
and after a few failed attempts I basically had to hose and reset to stock with MSM (which was hard since I don't have a Win computer, but that's a solution for another day).
I think the other poster is right, you do need to flash firmware first before installing. Have you tried this? I'll try it tonight and report back, as I need to get this running before Monday.

hyve9 said:
Hey just wanted you to know that I had the exact same problem, I posted about it here:
https://www.reddit.com/r/LineageOS/comments/wyr4v9
and after a few failed attempts I basically had to hose and reset to stock with MSM (which was hard since I don't have a Win computer, but that's a solution for another day).
I think the other poster is right, you do need to flash firmware first before installing. Have you tried this? I'll try it tonight and report back, as I need to get this running before Monday.
Click to expand...
Click to collapse
Actually I have the plan to go back to Stock with MSM, than reinstall all updates of the original Oneplus 9 Pro, than reinstall the actual version of LineageOS MicroG (20220824) after dumping payload and flashing dtbo, vendor_boot and boot like psk.lt wrote.
wondering what you will accive.

Psk.It said:
Instead of recovery
basically:
dump payload
flash btbo
flash vendor_boot
(someone suggest to reboot in fastboot)
flash boot
from fastboot menu go to recovery
finally sideload the zip
Click to expand...
Click to collapse
I'm trying to dump payload. I installed the latest Python version, than downloaded payload_dumper from this link , done what described on the website and now in cmd I have the Message:
File "C:\Users\X\Desktop\Payload_dumper\payload_dumper.py", line 67
<title>payload_dumper/payload_dumper.py at master · vm03/payload_dumper · GitHub</title>
SyntaxError: invalid character '·' (U+00B7)
Do I understand it right, that the script of the tool has an error? Do you have a link of a Payload_dumper Tool that works and from where I can download it? I also found this link and in the text you can download the Tool from here , but I do not trust 100% this sources :-/

enoironline said:
I'm trying to dump payload. I installed the latest Python version, than downloaded payload_dumper from this link , done what described on the website and now in cmd I have the Message:
File "C:\Users\X\Desktop\Payload_dumper\payload_dumper.py", line 67
<title>payload_dumper/payload_dumper.py at master · vm03/payload_dumper · GitHub</title>
SyntaxError: invalid character '·' (U+00B7)
Do I understand it right, that the script of the tool has an error? Do you have a link of a Payload_dumper Tool that works and from where I can download it? I also found this link and in the text you can download the Tool from here , but I do not trust 100% this sources :-/
Click to expand...
Click to collapse
I made It! Using the tool from this website (link to the tool) I was able to extract all files. Now I can start.

Last LineageOS for MicroG Version (20220824) finaly INSTALLED (what a fight!).
Many thanks to Psk.lt and hyve9 for your help!
A quick guide for newbes like me:
Install on a PC:
- adb
- the last qualcolm driver ect
- python
download on the PC:
- MSN Tool to go back to stock OS
- payload Dumper Tool (THANK YOU PSK!!!)
- the newest LineageOS for MicroG Version
On the Oneplus 9 Pro:
- With MSN Tool back to Stock OS
- Install all possible Updates (in my device it was C61!)
- Install Oxygen Updater from an app Store or apk
- Install the REALLY last Update for your device (in my Case C62)
- download the last LineageOS for MicroG Version (.zip)
- open the .zip file and copy out the payload.bin file
Than like Psk.lt wrote, with the Payload Dumper dump the payload-file and extract btbo, vendor_boot and boot files
Safe the following files under adb
- btbo
- vendor_boot
- boot
- the lineageOS for MicroG file
Start with the installation like described in the LineageOS guide, but
- use the own btbo and vendor_boot files
- for recovery, insted of using the recovery-file from LineageOS for microG, use the boot file (extractet with Payload dumper)
- finally sideload the LineageOS for MicroG file (.zip)
End

A question: in the future can I use the oxygen Updater under LineageOS for MicroG to install all the newest updates, or does it work only if using the stock OS?

enoironline said:
A question: in the future can I use the oxygen Updater under LineageOS for MicroG to install all the newest updates, or does it work only if using the stock OS?
Click to expand...
Click to collapse
you should use embedded updater (settings - system - update) but you will not be able to copy the zip if you don't have root
If you want backup the updated zip, you should sideload via pc

enoironline said:
Last LineageOS for MicroG Version (20220824) finaly INSTALLED (what a fight!).
Click to expand...
Click to collapse
Let me know how you are liking it, im debating it or CRDroid.

ajolly said:
Let me know how you are liking it, im debating it or CRDroid.
Click to expand...
Click to collapse
I'm using LineageOS with MicroG since the End of last year and had never real problems, only the installation progress is complicated (if you follow only the official installation guides of LineageOS and from LOS-MicroG). Last week I had LineageOS without MicroG installed and I must say, I did not really missed the MicroG functions, maybe because the apps I'm using do not need necessarely the functions of MicroG / would mainly need the messaging function, but can still run and function without. It dipend what you want to accive with the OS, if you want to be compleetly G-free under LineageOS, than you have to change at your own a few more things like DNS setting, systemwebview... I can't compare LinOS-MicroG with CRDroid, beacause I never used it.
What I do not like in V 19.1 vs 18.X is the bigger format of the quick setting tiles. I know that it's possible to change it, but I have to find out how to do it in the simplest way.
A function that I miss in LineageOS (for MicroG) is a Sandbox function like in Graphene, but using Shelter helps, even if not as good as a Sandbox.
What I really don't like is the fact, that LineageOS for MicroG doesn't ships Updates with the firmware, and their Installation Guide is not really helpful (do what is described by LineageOS... and it's not really what you have to do).
What I really like is how long the battery life lasts, at least with V18 and it has surely to do with my user's habits. Now to find out how it will be under V19.1.
Over all: I like it and do not want to replace it (for now).

Question Denying OTA because it is a SPL downgrade

Hi,
Whilst attemping to switch from [ROM][13][OFFICIAL] PixelOS [AOSP][STABLE][15/04/2023] over to [ROM] [13.0] [alioth/aliothin] ArrowOS 13.0 [MiPa] [OTA] from scratch, I've attempted to install two Firmware versions in an attempt to successfully transition from one OS over to the other. These are as follows:
- miui_ALIOTHGlobal_V13.0.5.0.SKHMIXM_74dd0fb2e5_12.0
- miui_ALIOTHEEAGlobal_V13.0.9.0.SKHEUXM_f9603cf7f3_12.0
The Instruction procedure was followed from the ArrowOS guide in this link HERE.
The ArrowOS boot, vendor_boot and Latest rom zips were all downloaded. Both the vendor.img and vendor_boot.img were both installed.
The issue is whenever I attempt to install the recommended firmware versions, I'm encountering the following error message below.
ERROR: recovery: Signature verification failed
ERROR: recovery: error: 21
Installing update...
ERROR: recovery: Current SPL: 2023-01-05 Target SPL: 2022-08-01 this is considered a downgrade
ERROR: recovery: Denying OTA because it's a SPL downgrade
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This error message is preventing me from continuing to proceed by installing the latest version of Arrow OS 13.
Can someone please help me resolve this issue ASAP as I'm completely stuck and cannot find a solution to resume with the installation.
Your help would be greatly appreciated in this troublesome time!

Hey mate, before you flashed the firmware did you follow the step to format data? Try to format data and flash the recommended FW. Make sure you use the FW recommended for the region of your phone. If you are still stuck join the Arrow support group on telegram. You will get help quicker and more feedback over there.