We do have full read/write abilities with the use of a mod chip called InFeCtuS. Although, it may be possible that Sony signs every file in the NAND chips with a unique number, but this has never been tried so it is unknown how the data is signed.
yes there is a 'PS3 NAND Dump Extractor' in the downloads section under PS3 Homebrew/Utils
If this theory worked 100%, wouldn't it not be far fetched to replace the firmware number file with one from a test/debug firmware, so you could install a newer test/debug firmware on the PS3 with no problem?
I think I have found something that will crack the PS3 wide oped
If you used my theory and grabbed the PS3's index.dat from a 1.50 Test PS3 and used this file to replace your retail PS3's index.dat and then tried to start the leaked 1.80.pup test firmware, wouldn't the installer start because the PS3 thinks it is test FW 1.5? (please note index.dat is the name of the PSP's file that determines the FW #, but since the PSP and PS3's FW are similar the PS3 probably has a file like this) Dev'ers should be made aware of this!
Edit: By the way, for people who don't know why you should have test FW, Test FW allows unsigned code to run.
By the way, I just read the "PS3 NAND Extractor Update & More!" story by CJPC and he explained that with some game modifying he was able to get games to run from the hard dive (external and internal)(on test PS3's only). This makes this theory more urgent for people like CJPC to look into.
Edit: I was searching, and I stumbled across this thread. I don't mean to say I told you so, but I did. http://www.ps3news.com/PS3Dev/wip-do...revious-dumps/