Custom ROM for samsung a01 core?

[unluckyuser]

I installed LineageOS 18.1 = Android 11 today.
It works well, but there are some bugs.
But it works...
all at your own risk.

Can you give more details about what rom you tested and what bugs you found?

Is the sim card and mobile data/calls working?

 

[a9381]

Can you give more details about what rom you tested and what bugs you found?

Is the sim card and mobile data/calls working?

https://sourceforge.net/projects/andyyan-gsi/files/lineage-18.x/lineage-18.1-20220715-UNOFFICIAL-a64_bvS-vndklite.img.xz/download

I just checked (it's not my main device) and SIM doesn't work. So I'm looking for another ROM (my problem with 10 which is not vndklite).
also, mtp and sdcrd not working

edit: now,I tset it (Android 11,LineageOS 18)
sdcard working
SIM working for SMS/calls (my sim not supported data)
Mtp not working
WiFi working
ADB working
vndklite
that all I checked.

https://master.dl.sourceforge.net/project/treblerom/LiR/2022.03.25/lir-v316-220325-a64-bvZ-lite.img.xz?viasf=1

 

[unluckyuser]

https://sourceforge.net/projects/andyyan-gsi/files/lineage-18.x/lineage-18.1-20220715-UNOFFICIAL-a64_bvS-vndklite.img.xz/download

I just checked (it's not my main device) and SIM doesn't work. So I'm looking for another ROM (my problem with 10 which is not vndklite).
also, mtp and sdcrd not working

Thank you.

Do you remember why did you choose the vndklite rom? My treble info says "VNDK is not in the lite mode", so I guessed it wouldn't be compatible with vndklite roms.

For reference in this thread, my full treble info is:

vndk version: 29
linker namespace isolation: VNDK is not in the lite mode
manifest location: modern
system as root: enabled
seamless updates: unsupported
dynamic partitions: enabled
cpu architecture: arm32
binder architecture: 64bit
type of image required: system-arm32_binder64-ab.img.xz

 

[a9381]

@unluckyuser
A. As I wrote, I found a better ROM - based on 11

edit: now,I tset it (Android 11,LineageOS 18)
sdcard working
SIM working for SMS/calls (my sim not supported data)
Mtp not working
WiFi working
ADB working
vndklite
that all I checked.

https://master.dl.sourceforge.net/project/treblerom/LiR/2022.03.25/lir-v316-220325-a64-bvZ-lite.img.xz?viasf=1

B. vndklite for the system to be R/W

 

[SuperPotato3000]

Update: I flashed an android 10 gsi with odin and, indeed, sim cards work normally.



I think you're right about that and I was too hasty to ignore it. I searched a bit more, and found this, in the official android documentation: https://developer.android.com/topic/generic-system-image. Apparently, it means that this device doesn't offer full vndk support. Perhaps, there's a workaround, but is goes beyond my knowledge.

It's quite disappointing, because having to use the same android version defeats part of the purpose of flashing a custom rom, but, at least, we can get rid of the stock android go limitations.

I tried searching for a rom based on android 10, but with the latest security fixes (android 10 was supported until february 2023), but found none. I have not enough memory and storage to build it myself, so I've hit a wall here. If anyone wants to help, feel free to contact me.

The phhusson android 10 v222 gsi I used is the latest one that used 10, at least by him, it's dated and has June 2020 patch iirc, although it does not really matter for me, I have wanted to update it to 12 but now after seeing that SIM issue, I guess I will stay on 10, I'm trying to compile a GSI on wsl but I'm stuck at cloning the full android repo that even with a 1 Gbps network takes hours to only get to a 12%, I guess I will leave it downloading some day in the background if I don't keep forgetting.

 

[SuperPotato3000]

how to use fastbootd for this device?

It's not a really complex operation but it should work, it patches recovery, in which you could then go to fastbootd mode while in recovery. Remember to get a backup copy of recovery from a original Samsung ROM for your a01 core, you only need Odin and GitHub so that you can use actions to flash recovery.
Thankfully, there is a full explained guide on the repo itself, so that there isn't more risks of ending up in a brick because I didn't explain it well.

GitHub - Johx22/Patch-Recovery: CI service that patches recovery.img of Dynamic Samsung devices launched with Android 10 and above to enable fastbootd.

CI service that patches recovery.img of Dynamic Samsung devices launched with Android 10 and above to enable fastbootd. - GitHub - Johx22/Patch-Recovery: CI service that patches recovery.img of Dyn...

github.com

If you are going to do it, well, then good luck.

 

[unluckyuser]

The phhusson android 10 v222 gsi I used is the latest one that used 10, at least by him, it's dated and has June 2020 patch iirc, although it does not really matter for me, I have wanted to update it to 12 but now after seeing that SIM issue, I guess I will stay on 10, I'm trying to compile a GSI on wsl but I'm stuck at cloning the full android repo that even with a 1 Gbps network takes hours to only get to a 12%, I guess I will leave it downloading some day in the background if I don't keep forgetting.

I managed to find a rom with the latest security patches from february 2023. It's the build from LeOS and can be downloaded from here (the binder64 version is the one called a64). This rom is working fine for me and is the best I got. It comes with a few apps, microg and root access, but we can remove it all. If anyone wants to install it with odin, I uploaded the prepared file here to save your time.

I'm trying to compile a GSI on wsl but I'm stuck at cloning the full android repo that even with a 1 Gbps network takes hours to only get to a 12%

If you just want the latest files to do a single build and then delete the repo, perhaps you can do a shallow clone to save a lot of time.

Mind if I ask what rom you intend to build?

 

[SuperPotato3000]

Mind if I ask what rom you intend to build?

I'm gonna try again with something that is more pure, I guess I'm gonna use some more pure android source, maybe even AOSP itself but I'm gonna currently try using the one on phhusson's compiler, maybe it'll work, I have no idea.

 

[a9381]

As I wrote, LiR 18 works well (this is Android 11). The recovery with fastbootD is aviable in 4PDA.
I wrote in phh wiki

Galaxy A01Core SM‐A013G

Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.

github.com

@unluckyuser How did you make a file compatible with Odin?

 

[unluckyuser]

As I wrote, LiR 18 works well (this is Android 11). The recovery with fastbootD is aviable in 4PDA.
I wrote in phh wiki

Galaxy A01Core SM‐A013G

Notes about tinkering with Android Project Treble. Contribute to phhusson/treble_experimentations development by creating an account on GitHub.

github.com

When I read your previous comment, I wasn't so attentive and didn't notice that you mentioned the sim card working, sorry. That's curious and shows that the cause for sim card not working in the other gsis isn't because of the "namespace.default.isolated=false" issue. I will check that rom and see if I can find out more about this issue.

Also, I didn't know about that wiki. Thanks for contributing.

@unluckyuser How did you make a file compatible with Odin?

I used the method from this thread. I ran the script with the stock rom and the desired gsi as input, and it repacked the gsi in the odin format.

 

[.Luce.]

Enable fastbootd and install TWRP for Samsung Galaxy a01 core

The topic is divided into two parts, one for those who want to use fastboot and another for those who want to install TWRP. The following procedures require unlocking the bootloader. Downloads for Fastbootd: Odin...

forum.xda-developers.com