Looking for Gigaset GS290 Android stock signed images

Devices
1

Hi everyone,

I’m stuck in a BROM boot loop on my Gigaset GS290 and I need help finding the official signed stock firmware.

What happened

I successfully installed Ubuntu Touch on my GS290 using the UBports Installer. Everything was working fine. I then attempted to install Sailfish OS using piggz’s flash script (yggdrasil-ci), which flashed hybris-boot.img, sailfish.img001, logo.bin and lk-yggdrasil.img via fastboot.

After rebooting, the screen stayed black. The phone is now stuck in a permanent BROM boot loop.

What I’ve already tried

Using mtkclient, I successfully communicated with the phone in BROM mode (MT6763 / Helio P23, unprotected) and reflashed the following partitions using the VollaOS bootstrap package:

  • preloader_k63v2_64_bsp.bin → Boot1 and Boot2
  • lk.img and lk2.img
  • tee.img (tee1 and tee2)
  • spmfw.img, sspm.img (sspm_1 and sspm_2)
  • recovery.img → boot and recovery partitions
  • seccfg partition erased

Despite all this, the phone remains in BROM mode. mtkclient always detects “BROM mode” instead of “Preloader mode”, which strongly suggests that the eMMC PARTITION_CONFIG register (EXT_CSD byte 179) was modified by the UBports Installer to boot from the User partition instead of Boot1.

I also tried SP Flash Tool v5.1924 under Windows with “Format All + Download” mode, but the available firmware packages I found online are missing the signed images (md1img-verified.img, tee-verified.img, etc.) and generate STATUS_SEC_INSUFFICIENT_BUFFER errors.

What I need

I’m looking for the official signed stock firmware for the Gigaset GS290 (Android 10, MT6763), ideally version Gigaset_GS290_10_V04_20200313 or later, containing all verified/signed partition images including:

  • md1img-verified.img
  • tee-verified.img
  • spmfw-verified.img
  • sspm-verified.img
  • dtbo-verified.img

Alternatively, if anyone knows how to reset the eMMC PARTITION_CONFIG register using mtkclient or another Linux tool, that would also solve my problem.

The phone is NOT hard-bricked — mtkclient communicates perfectly with it every time in BROM mode. It just won’t boot because of this register issue.

Any help would be greatly appreciated!

Thanks

2

Did you try to search in XDA developers, might be helpful.

And maybe Vollaphone chat / forum.

Maybe GSI Rom possible? !?

3

I haven’t done this for ages but I used the firmware (unpacked in the .cache/ubports folder) from ubports and sp flash tool (I believe version 6) to recover. Most recently it was a GS5 where the firmware layout is easier to grok, but I’ve done it with a GS290 as well. I discarded the source for the GS290 android build. Sorry.

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4

I tried, but I couldn’t find much information about this specific model. Thank you for taking the time to reply.

5

Thank you poetaster. I was going to look into that !

6

Hi there, maybe this could be helpful? https://www.hardreset.info/devices/gigaset/gigaset-gs290/faq/firmware/gigaset-firmware/

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7

Thank you so much! Thanks to this tip, I was able to reinstall the stock OS and then do a clean install of SailfishOS. You saved my secondary smartphone.

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