Hey,
For all you wondering if it'll brick or not, Look it up on the site, Or google.ca, There's examples of what Ps3's will brick and won't brink your Ps3. It's all over then Net. Here's one from a site i found.
Update: Follow the below list. Find your model # on the PS3 itself. Do not attempt this with 256MB NAND.
FAT NAND SIZE
CECHA = 256MB
CECHB = 256MB
CECHC = 256MB
CECHE = 256MB
CECHG = 256MB
CECHH = 16MB
CECHJ = 16MB
CECHK = 16MB
CECHL = 16MB
CECHM = 16MB
CECHP = 16MB
CECHQ = 16MB
SLIM NAND SIZE
CECH-20..A = 16MB
CECH-20..B = 16MB
CECH-21..A = 16MB
CECH-21..B = 16MB
CECH-250.A = 16MB
CECH-250.B = 16MB
CECH-250.A = 16MB
CECH-250.B = 16MB
CECH-251.A = 16MB
CECH-251.B = 16MB
Found on :
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Supposibly the bricking is coming from the Ps3's with older Nands. Meaning the 256MB. I'm not trusting it, and i'm going to stay on Geohots Firmware for now, as it's running great with no problems on both my Ps3's. But if your seriously worried, Wait a couple weeks (Maybe less) and if this isn't fixed and confirmed by then... With hackers now adays, Find a diffrent Custom Firmware. Who knows, Maybe in a couple weeks, If not already, People are running Back-ups on Geohots Firmware. With the Hacking Community, Anything is POSSIBLE!!
Sony < Hackers