The former NY Jets employee who allegedly received penis photos from Brett Favre also claims she got a text message from the NFL legend ... in which he asks her for a video of her masturbating -- this according to sources connected to the investigation.



We're told Jenn Sterger received the sextual request back in late 2008 -- months after Favre allegedly sexted over the pics of little Brett.

It's unclear if Sterger has turned over the video request text message to the NFL -- which is currently investigating Favre to see if he violated the league's personal conduct policy.

Calls to Favre's camp have not been returned. Sterger's manager and lawyer have also declined to comment.