Save that in notepad as breakself.bat in the directory d:\cech\3.73 and then type "breakself -d lv0 lv0.elf" and you will get the exact same results. He is full of it. We've heard this song and dance before
Information spreads via mathieulh's twitter that he is at it again. The main guy who dumped the metldr, has just decrypted LV0 of firmware 3.73. However with the recent outbreak of his leaked exploit of pwnning of the metldr, and after releasing a tutorial of how to do it, MathieuLH has stated that he will not be releasing his findings(no surprise there) to the scene, like he did with the metldr exploit until it was leaked by an anonymous source.. Here is what he stated, when showing the proof of concept that he actually decrypted the LV0 at firmware 3.73.
By the way, I won’t be posting keys, I won’t be posting dumps and I won’t be saying how it was done, time to work gentlemen.
Logics will get you from A to B, imagination will take you everywhere. Albert Einstein