[ROM][UNOFFICIAL][13]/[Testing] eOS-T for Samsung Galaxy S21 (o1s only) (exynos 2100 variant)

/e/OS Devices UnOfficial Builds
1

I was also able to build. Who wants to test? Might also not even boot…but the developer is active and motivated

https://sourceforge.net/projects/eosbuildsronnz98/files/SamsungSmartphones/e-1.21-t-20240421-UNOFFICIAL-o1s.zip/download

2
Retail Branding Marketing Name Device Model
Samsung Galaxy S21 5G o1s SM-G991B
Samsung Galaxy S21 5G o1s SM-G991N
.
but not
Samsung Galaxy S21 5G o1q SM-G9910
Samsung Galaxy S21 5G o1q SM-G991Q
Samsung Galaxy S21 5G o1q SM-G991U1
Samsung Galaxy S21 5G o1q SM-G991W
Samsung Galaxy S21 5G SC-51B SC-51B
Samsung Galaxy S21 5G SCG09 SCG09
3

hello there .

can you please also make \e\ os for s21 ultra exynos (p3s).
thank you

4

There are yet no sources for the S21 Ultra for building

5

i searched github (https://github.com/search?q=android_device_p3s&type=repositories) and found this https://github.com/Exy2100-LOS. it has the repos for p3s. (already has an unofficial crdroid i think)

and thank you for the quick reply. i hope this will work.

6

I know this source (there are two others). None of them work

7

Here is the respective xda thread:

https://xdaforums.com/t/rom-unofficial-14-testing-lineageos-21-0-for-samsung-galaxy-s21-o1s-only-exynos-2100-variant.4667836/page-3

8

Hi there,
it seems that nobody has tried it yet. I have a Samsung Galaxy S21 (SM-G991B/DS) and I am willing to take the risk. I want to test installing it but I would need further instructions. Under the link above I get five zip-files (eOSBuildsRonnz98 download | SourceForge.net) Which one should I choose and how exactly do I proceed after downloading the right zip-file?

Sorry, if this question is too stupid, but I only have installed /e/ OS once before - on my old Galaxy S7, but for this an idiot proof installation kit was provided.

Thanx a lot!

9

Please look here for instructions:
https://xdaforums.com/t/rom-14-pixelexperience-14-beta-for-galaxy-s20-series-aosp.4663706/

11

A14 based /e/OS-U version for testing:

S21
e-2.4-u-20241006-UNOFFICIAL-o1s.zip

S21 Ultra
e-2.4-u-20241006-UNOFFICIAL-p3s.zip

S21FE
e-2.4-u-20241006-UNOFFICIAL-r9s.zip

Sorry, no instructions only sources:

12
13

https://youtu.be/cMAiKd5QoAk

This video is for installing GSI rom on P3S. I tried to install the test zip and it stays in bootlogo. Is there anything I can do? Thanks

14

At the moment no. The development of the S21 sources are currently paused

1 Like
15

Anyone who is interested there is now a working Android 15 alpha LOS22.1 build available:

https://xdaforums.com/t/rom-unofficial-14-testing-lineageos-21-0-for-samsung-galaxy-s21-o1s-only-exynos-2100-variant.4667836/page-5#post-89882774

16

I could build using new A15 sources also for /e/OS-U
Though, no garantee that it works

e-2.6.3-u-20250104-UNOFFICIAL-o1s.zip

17

Any feedback? Does it work?

18

I would love to test this as phone sizes are out of control, and the S21 borders on reasonable.

Happy to pick up a used model on ebay to test this out - are G991B models generally bootloader-unlocked? Just don’t want to have to waste time with getting a locked one and dealing with returns.

19

I have an S21 with which i can test ROMs. Just a bit rusty on what to flash in what order or combo, so if someone wants me to test a ROM, please help me a bit (i did just flash a Samsung S10 with eOS)

20

best if you join the respective Telegram group: S21ExynosDevelopment