Thank you Denis,
I will give a try, I feel the same way about the proprietary software so I will 
let this to make my tests with libre software.
Regards,

- Fil Lupin.


‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On August 22, 2018 12:05 PM, Denis 'GNUtoo' Carikli <gnu...@no-log.org> wrote:

> On Wed, 22 Aug 2018 06:02:38 +0000
> Fil Lupin fillu...@protonmail.com wrote:
>
> > If you know how to backup all partition of a stock samsung device,
> > could you say it?
>
> You can do it by
>
> 1.  getting root without touching anything else
> 2.  backuping the recovery
> 3.  replacing the recovery with a recovery that has adb, and booting
>     on that to backup the rest of the partitions.
>
>     I never tried to get root without touching anything else, so I don't
>     know how easy it is to do it.
>
>     There is also another way which may require some work, and requires a
>     proprietary software operating system: Samsung has recovery tools that
>     run on windows, and the recovery tools are able to get stock images and
>     reinstall them on the smartphone. So it's probably possible for someone
>     to run such tool and get the URL of the recovery tools. However I've no
>     idea if the URL are permanent or if it uses some other ways to download
>     the files.
>
>     The approach rooting approach seem way more reliable for users, and the
>     root exploits are probably already free software.
>
>     All you have to do is to either:
>
>
> -   find a root exploit that works for you and that you can trust, which
>     doesn't do anything else than getting you temporary root access
>
> -   or find an existing free software root application and modify it to
>     only give you root within a shell, by stripping it of all unnecessary
>     code. This may require you to successfully compile the exploit code,
>     or to extract the exploit code from it (if's it's a separate
>     executable this should be easy as apk are zip files).
>
>
> > If you know this is not possible, could you let me know?
>
> It's possible but I didn't do it myself, so I don't know the way to get
> root without touching anything else. Doing probably require some work
> or testing, and may or may not take a long time to do.
>
> Denis.


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