Below are further details via PS3 Dev Wiki: RSOD Fix
The RSOD Fix - Observations about RSOD:
Seems to appear mostly on consoles with Samsung NORS (CECHLxx-CECH20xx) May be caused by an error being thrown while writing to NOR (this is theory) Mostly caused by a corrupt area of flash called VTRM
The original RSOD "fix" was actually a CFW patch to bypass the RSOD. basic_plugins.sprx was modified to ignore the error condition to allow the console to boot. While this worked, certain things like trophies still didn't work correctly.
The actual RSOD fix occurs by the VTRM area on flash being rewritten. The ability to do this is already built into the firmware, it just needs to be called.
Guida:
1) Scaricate il PUP NORSOD e installatelo sulla PS3.
2) Scaricare il programma rsodfix.gnpdrm.pkg
3) Installate dalla xmb rsodfix.gnpdrm.pkg ed avviatelo.
4) Riavviate la PS3 ed installate il fw o cfw che volete.
Thanks: dospeidra, an0nymous, nikitis, robs
I download purtoppo non posso metterli a appena rancid o twing arrivano li metteranno (spero)
Fonte: http://www.ps3news.com/ps3-hacks-jailbreak/ps3-rsod-red-screen-of-death-fix-is-now-available/