El primer paso para CFW 3.73!
Hate him or love him, Mathieulh still has got skill. He just posted on his Twitter the following picture:

Yep you may have to check the picture a few times. Mathieulh has managed and showed us he is still capable and released a proof of concept proving that he has decrypted LV0 @ FW 3.73. This of course means CFW up to the latest PS3 firmware!
HOWEVER, he has went ahead and said the following:
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.
With the leak last week of the Metldr exploit, he went out and said he would not be releasing anything to the scene again. What is important to take away from this is that Mathieulh has showed us it IS possible, it is not FAR away, and all we need is someone able to get to it.
Maybe if you guys would be nice to him (instead of flame), he MAY be just kind enough to drop a few hints or ‘leak’ something
Should Mathieulh release his method for decrypting LV0?
Read more:
http://www.ps3hax.net/#ixzz1dfXk2QOG