Is the lineage OS working?
So this is your error. Did you search it?
Erase successful, but not automatically formatting.
File system type raw data not supported.
It is complex, and maybe you need to sleep on it!
I read several posts … I do not know your device!
Please keep searching, but does this fit? https://www.droidwin.com/fix-erase-successful-but-not-automatically-formatting-cant-determine-partition-type/
What I tried without success:
USB 2 port, new cable.
Partition scheme should be correct A-only, cause Magisk showed it on Stock ROM.
I can boot into /e/ recovery and format cache and data from there without error.
I can do “fastboot format:ext4 system” without problems.
Tried newest adb 31.0.3, same error. An old adb version, another error:
fastboot -w
wiping userdata…
CreateProcess failed: Das System kann die angegebene Datei nicht finden. (2)
error: Cannot generate image for userdata
There are scatter files for GX290 (plus?): https://github.com/dpeckett/opengs
But SP flashtool needs an authentification file?
Here seems to be sourcecode: https://www.gigaset.com/es_es/cms/lp/open-source.html
Stock ROM firmware seems to be only available for GS290:
(New users can only post 2 links???)
Would it be possible to make a ROM dump from a running /e/ with SP flashtool? And then flash it with SP?
I think I have to send it to Gigaset for a reset…
Anyway thanks for your help
I think that is correct, the bar will lift soon, particularly if your read and jump some hoops!, in the meantime try code block to include a link 
https://service.gigaset.com/en/support/tickets/new
Maybe ask Gigaset for a ROM first!? I doubt they will oblige, but they should know their customers want one; unless anyone knows a better source.
ROM dump from a running /e/
I have no experience of https://forum.hovatek.com/thread-526.html
I asked Gigaset, they don’t give the ROM but they flash it for 25€, that’s ok.
SP flashtool is not so open like in this description anymore. You cannot backup the whole memory easily, because anybody could copy it. You can backup parts but you need this authentification file. So manufacturers can secure their software by copy protect part of flash memory. I will write Gigaset again, perhaps I find an interested technician.
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I once flashed the GX290 image and ended in a boot loop on my GX290+. The Mediatek tool chain and a initial image I could find in the wild.
I own a GX290 plus now for a while and it is the only real outdoor phone I have seen so far. Not to compare with any Samsung or equivalent. IP86 is one thing, MIL STD 810 G is just another level. Alloy frame, power bank functionality, wireless charging - all there. I use it on my offroad motorcycle for all kind of purposes under ALL conditions.
If I just could get rid of the preinstalled OS and use the beloved e.foundation just like on my FP3+
If e.foundation would make an official image, I would support this by purchasing another e Backer worth 128€. 
BR
Uwe
Hi, where did you find the “initial image” stock rom?
I searched the internet and eventually found one…
Can’t remember where, but the filename was MT6763__10__Gigaset_GX290_10.0_V11_20200813__QP1A.190711.020__GX290
On github is only boot and recovery.img. I found something here but don’t know if it’s for GX290plus and if I can trust the link.
i am also for supporting rugged phones,
why not this one as it seems to be the esiest porting as possible because its brother is already supported.
As you can read in Gigaset GX290 Plus - #13 by Howie, there is some difference … 
So, /e/ could not be build on this device unless Gigaset release complete sources.
It’s a quite new device, so I think we just have to be patient and wait for it !
Sorry, i was thinking about gs290<–>gx290
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Following this url to the files the title of the freecloud page is “gx290” not “gx290 plus”.
This is confusing me, (and maybe others) are there files for “gx290 3GB+32GB” ?
any more news on this? i just order a gx290+. someone has a build for it?
Hello Gajus,
I have been using it on GX290+ for nine months now without updating. Flashing was difficult and I recommend to check for restore path before starting your journey.
Best regards
Sebastian
@Santos @Gajus @sax if you are still into it: I managed to update the build instructions for v0.23-r. You may download the result. Kindly be aware that I had trouble with bootloops and boot verity. I cannot exactly recall what I did in the end.
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I would like to try, please provide the password for freecloud, or remove it 
