Samsung PM871 password protected ... I tried everything ...

[saronno]

@saronno, perhaps if you stopped being cryptic and posted a link to the actual source of your information, you might get more replies.

https://www.ru.nl/publish/pages/909282/draft-paper.pdf

You are right .... I thought it was well known

[fzabkar]

Most data recovery people are just tool users who concentrate their efforts on data recovery, ie making money. Very few are involved in any serious research. You have probably already done more research than most.

[koobala]

saronno, did you succeed?