I used linux to install /e/ on my S7. I have android 8. Followed the guide and got error 21 signature verification failed. Went back to windows/odin and tried to install 7.0 firmware. Downloaded android 7 firmware set from sanmobile. Tried to install using odin following the instructions including re-partition and got Can’t open the specified file. (Line: 2057).
@archje I think you are the right person for this.
@harvey186, mercié for your trust.
due to Samsung’s security measures “for the protection of the user” it is not possible to downgrade the Galaxy S7 “herolte” with formerly installed stockROM Androi 8.0.0 to a lower firmware version.
This means you can only install the same firmware version Android 8.0.0 that was on the device before - or a higher firmware version.In no case is it possible to install stockrom Android 7.0, because the bootloader is locked with v8.0.0 (see your error message “signature verification failed”).
Is there a way to install /e/ on my device?
@dhandler, of course there is!
I’ve already migrated several Galaxy S 7 “herolte” devices (and S7 Edge “hero2lte” as well) with starting point stockROM Android 8.0.0 to /e/ OS ROM. This must also be possible with your device.
I need detailed software information to give you concrete help.
What is the status quo? Which stockROM Android Bootlaoder / Baseband firmware is installed on your “herolte”?
You can find this data on your device ::
About phone >
Software Information >
Baseband version :: G930FXX??? and/or
Build number :: R16NW.G930FXX???
I’d appreciate the help.
This model SM-G930V has a not compatible chipset Qualcomm MSM8996 Snapdragon 820.
/e/ OS ROM requires the model G930F (Global) with Samsung Exynos 8890 chipset.
This ultimately means you cannot install /e/ OS ROM.
Please see also> Samsung Galaxy S7 (USA) models are: