Thank you for yours answers.
Well I might have a lot to loose in the case I would not get the same features I had with the original internal flash firmware and possibly would not be able to come back to what I had because not backed-up.
After a long searching on the web, I finally found a way to save the flashed image in a .nfi file.
it is later possible to put that image even on a USB pen. All of this just using Barry Allen and only providing to it the file "secondstage.gz" it says it is missing.
[Blockierte Grafik: http://www.digital-kaos.co.uk/…/images/smilies/proud.gif]
Since there may be somebody interested to know how, I drop few lines of descriptions.
I learnt how, just looking to the attached script file, which was originally made for DM600.
the procedure could be the following:
1) retrieve a secondstage file from the following URL:
http://sources.dreamboxupdate.com/do...e-dm800-69.bin
if you need a different secondstage version replace the 69 with the version you want. I would suggest to retrieve the same second stage you have on your flash image.
2) put it on /MB_IMAGES on your DM800
3) gzip it with the following command:
gzip -c /tmp/secondstage-dm800-69.bin > secondstage.gz
4) Now Barry Allen should be happy, because the secondstage.gz is now present and it should be able to generate the .nfi image.
That's it.
Nothing difficult. The problem was only to find where to retrieve the secondstage file on the internet. That previously indicated link seems to me to be a hidden one.
Regards