[UNOFFICIAL BUILD] Gigaset GX290

/e/OS Devices UnOfficial Builds
,
1

Hello,

here is my custom build e-2.9-s for Gigaset GX290:

Install instructions:

  • Warning, you are doing this on your own risk:
    If you are switching from original rom, you must do a factory reset,
    that is delete and format the userdata partition!

  • make sure the battery is charged!

  • Unlock bootloader in the deleoper options
    (tab five times “about phone/build-number”)
    (system/developer: unlock bootloader)

  • reboot to fastboot:
    (hold volume-up, select fastboot with volume-up, start with volume-down)

  • unlock, confirm on screen:
    fastboot flashing unlock

  • unzip recovery:
    unzip e-2.9-s-20250531-UNOFFICIAL-GX290.zip recovery.img

  • flash it:
    fastboot flash recovery recovery.img

  • boot recovery:
    fastboot reboot recovery

  • in recovery,
    Do a factory reset if switching from original rom!
    select “Apply update”, “Apply from adb”
    adb sideload e-2.9-s-20250531-UNOFFICIAL-GX290.zip

reboot.

This build got these enhancements:

  • Kernel weed out
    The original Kernel was build with debugging enabled in all parts.
    Here is a greeting from the old kernel:
[    0.000000] **********************************************************
[    0.000000] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000] **                                                      **
[    0.000000] ** trace_printk() being used. Allocating extra memory.  **
[    0.000000] **                                                      **
[    0.000000] ** This means that this is a DEBUG kernel and it is     **
[    0.000000] ** unsafe for production use.                           **
[    0.000000] **                                                      **
[    0.000000] ** If you see this message and you are not debugging    **
[    0.000000] ** the kernel, report this immediately to your vendor!  **
[    0.000000] **                                                      **
[    0.000000] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000] **********************************************************

Yes, this is how that device was sold.

I cut off a lot of debugging cruft. A lot. A lot.

  • fixed charge mode
    The battery animation now works.
    And there was a bug that the device did not turn off the display backlight. So it doesn’t do fast charge. I fixed that.

  • wireless charger
    My device used to become punk after using a wireless charger. I fixed that somehow: The original code is crap. I’d like having the data sheets.

  • Android
    fixed adb via wlan
    Bug was, it did not remember the wireless network.

  • /e/os

    • I included Trebuchet launcher. You get the choice at the end of the welcome.
    • F-Droid with privileged extensions

bugs?

So far it’s just “App Lounge” that does not work for me. Let’s see if that gets fixed in e-3.0 :wink:

6 Likes
2

nice effort! also removing the debug mode…

3

Good news,

upgrade available:

e-3.0-s-20250607-UNOFFICIAL-GX290.zip

2 Likes
4

Hello @chr, Welcome to the /e/ forum.

Thank you, for your contribution on this device that was hoped for a long time.

.

When i build /e/, i like to share also the recovery-e aside the main .zip file, (and the others mandatory .img to flash prior when exist).
i take it from /out/target/product and rename it following the /e/ naming convention (copy/paste from the main .zip filename).

Edit : reading your instructions, i just see you included the recovery into the main .zip

5

Is it possible to upgrade without wiping all the user data?

6

What is your current version ?

7

0.23-r-20220512-UNOFFICIAL-GX290

8

The userdata gets wiped at this step:

fastboot flashing unlock

If the device was unlocked, you must not wipe. Boot to recovery and sideload the upgrade.

Mh, I’d like to update the install instructions but I can’t edit my post ?!

9

I tried to, I get signature verification failed error 21 in sideload

sha256 for the zip is fine.

m@ryz:~/.local/share/torbrowser/tbb/x86_64/tor-browser/Browser/Downloads$ sha256sum e-3.0-s-20250607-UNOFFICIAL-GX290.zip
058823e5c98a2cdf02d6e7956bc104f3f638c016afc8f65b9b4e1de0321399fd e-3.0-s-20250607-UNOFFICIAL-GX290.zip
m@ryz:~/.local/share/torbrowser/tbb/x86_64/tor-browser/Browser/Downloads$ cat e-3.0-s-20250607-UNOFFICIAL-GX290.zip.sha256sum
058823e5c98a2cdf02d6e7956bc104f3f638c016afc8f65b9b4e1de0321399fd e-3.0-s-20250607-UNOFFICIAL-GX290.zip
m@ryz:~/.local/share/torbrowser/tbb/x86_64/tor-browser/Browser/Downloads$

10

Did you flash the recovery beforehand?!
The build is signed with public test-keys

11

I accidentally sideloaded the uncompressed .img, now I managed to
install the new image and keep user settings. Thanks for the support.

12

So, it works?!
I tested that on ~4 devices

13

It is working properly now.
Thanks for your hints.

14

Cool, worked on my devices as well :wink:

At the moment I’m trying to build custom builds by my own.
Can you provide the code?
What need to be done to add it as supported device?

Maybe you want to join our wuplug meetings :wink: