[UNOFFICIAL BUILD] Samsung Galaxy A10, A20, A30, A40 series with Exynos 7885 chipset for /e/OS-T 3.x

/e/OS Devices UnOfficial Builds
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Samsung Galaxy A10, A20, A30, A40 series with Exynos 7885 chipset for /e/OS-T 3.7

e-3.7-t-20260413-UNOFFICIAL-a10.zip

https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a10.zip/download

e-3.7-t-20260413-UNOFFICIAL-a10dd.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a10dd.zip/download

e-3.7-t-20260413-UNOFFICIAL-a20.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a20.zip/download

e-3.7-t-20260413-UNOFFICIAL-a20e.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a20e.zip/download

e-3.7-t-20260413-UNOFFICIAL-a30.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a30.zip/download

e-3.7-t-20260413-UNOFFICIAL-a30s.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a30s.zip/download

e-3.7-t-20260413-UNOFFICIAL-a40.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/Samsung/Samsung%20Galaxy%20A10%20A20%20A30%20A40%20series/e-3.7-t-20260413-UNOFFICIAL-a40.zip/download

Please see sources and install instructions including recovery here:
https://xdaforums.com/t/rom-unofficial-13-0-crdroid-9-for-samsung-galaxy-a20.4653936/

Use it at your own risk!
Please support the developer(s)!

4 Likes
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Hello,

I’m using your image in a A40.

Could you please create an Android 14 image? The font size settings are better there.

THX mono

3

Hi ronnz98,

I have been using your previous build: Download e-3.4-a14-20260129-UNOFFICIAL-a40.zip (eOSBuildsRonnz98) . I have been having some issues with MicroG and the app lounge sometimes not downloading apps, so I might want to give your new build a try. How would I go about installing it? Do I have to wipe my entire system because it is a different android version or is there a way around this?

1 Like
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1 Like
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My StockOS base was Android 11 and the latest StockOS is also Android 11, but since I’m moving from an /e/ build on Android 14 back to one on Android 13, I should probably perform a clean flash anyway to avoid data incompatibility, right?

6

There were no signifiant change in file structure between a13 and a14…

7

I first installed F-Droid

and then via F-Droid

Aurora Store

The installed store is a bit buggy, but e-os updated it to version 3.7.

8

Hello !
Thanks @ronnz98 for providing these ROMs. On a A20e I have tried the dirty upgrade from /e/ 3.4 in TWRP but I was stuck on the splash screen (e with the jumping dot below).
I’ve successfully reinstalled the 3.4 in TWRP and it works. I will retry tomorrow after wiping data and see if it makes a difference.

EDIT :
I double-checked both md5 and SHA sums on the device, to make sure the files were not corrupted during the transfer
I tried the upgrade from the settings menu (local update) but it didn’t work
Retried the upgrade from TWRP after wiping everything (apart from data) but I have the same result (blocked on first screen)

EDIT 2 :
I did a full format, reboot to TWRP, then download and install, and it worked !
So I guess you need to do a complete install, not just the dirty upgrade…

So e-3.7 UNOFFICIAL is working with Galaxy A20e !

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If you did that using TWRP, i think your /data partition is no more encrypted…

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Thanks for the information @piero. Do you have any recommendations about how to re-encrypt ?
Maybe installing from /e/recovery, but I didn’t know how to install it ?
Do you have any resources about re-encrypting, about installing e-recovery on this device ?
Thanks in advance

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Community builds automatically install the recovery-e, but ronnz may have disable the feature to preserve already installed custom-recovery.

Same procedure as for TWRP

You should find the recovery-e into ronnz’s .ZIP

12

Hi @piero it seems that this device (A20e) is quite complicated, and I will need more guidance I think.

I had a look at this topic about encryption and I confirmed : my device is not encrypted anymore, and I have no option to encrypt it again.

My original install was e-3.4-a14-20260129-UNOFFICIAL-a20e after installin TWRP using Odin (tar archive containing twrp and vbmeta, downloaded from XDA), and decrypting data, then install with the zip file, etc… Did I miss something ?
I read again the HowTo install guide I see the format/type “yes” step to decrypt the partition, but I don’t see anything about re-encrypting the device afterwards.

I understand from your previous answer, and also from reading this thread that this is a limitation with twrp, that we can’t have an encrypted device ?

So, will installing /e/ through e-recovery allow data encryption ?

The problem is, when I try to flash the recovery.img extracted from e-3.7 UNOFFICIAL archive, it fails and the device refuses to boot.
I have read and tried many variants, like sudo odin4 -a recovery.tar -b vbmeta.tar from this howto, extracting the vbmeta included with twrp and serving it as a .tar archive

and also tried what you suggest in this post :

heimdall flash --DTB dtb.img --DTBO dtbo.img --BOOT boot.img --RECOVERY recovery.img --no-reboot

but everytime the device fails to reboot, and I have to get back to Odin mode and reflash TWRP again (the same archive, including vbmeta).

Do you have any clues about flashing e-recovery over twrp on this particuliar device (A20e) ?

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You should simply use the install feature in TWRP

You should simply format /data using the recovery-e

Features for keeping old device using unofficial build
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I tried with the “install” menu in twrp, then “install image”, pick the recovery.img file and apply to the recovery partition, but unfortunately, i have the same boot-loop :unamused_face:

I really don’t understand what I’m doing wrong…

1 Like
15

Hi, tried that, worked in my A40, unfortunately only after erasing data. Just found e-3.7.1-a14-20260423-UNOFFICIAL-a40 on SourceForge, installed that, could install without data erase. Seems also to work, thanks!

1 Like
16

I just tried it on my A30
It works very well
Though I had to switch the browser to Brave since the adblocking on the integrated browser doesn’t work well, others were heavenly smooth

17

are you able to tell if this rom will work fine with not orginal display on a40, becouse other custom roms have issues.

18

Is there a function to close the currently open app by long-pressing the back button?

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→ settings → system → buttons

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kill foreground app is not in the selection list.