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Author Topic: Dual Nand Setup, To Wp Or Not To Wp  (Read 64 times)

thwack

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Dual Nand Setup, To Wp Or Not To Wp
« on: December 03, 2009, 05:59:00 AM »

1 and 3 sound like a good idea. I'd miss out on the R6T3 switch though - it'd cause more problems than it's worth (incompatibility with some installs, and it's a bugger to fit a switch to....)
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thwack

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Dual Nand Setup, To Wp Or Not To Wp
« Reply #1 on: December 03, 2009, 06:25:00 AM »

QUOTE(mace1337 @ Dec 3 2009, 01:05 PM) View Post

But a hacked 8955 doesn't check for efuses right? My main goal is to keep the 7371 vulnerability open wile still being able to run 8955 and later.  Updating to 8955 will burn an efuse, after which I can no longer boot 7371, right?


Correct - the 'hacked' 8955 has (I believe) 'virtual' e-fuses blown, not (as it were) physically blown ones. With the NAND protect switch (or disable writing to the NAND permenantly) you'll be protecting yourself on that NAND - the only way you could update by accident would be to install a non-hacked version of a kernel on the xD card and boot from that.

I do see what you're saying, and I do agreet that going in with a bit of double protection is good (although it does remove sensitivity wink.gif ) but soldering a switch to an smd resistor is a real pain in the rear......
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thwack

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Dual Nand Setup, To Wp Or Not To Wp
« Reply #2 on: December 03, 2009, 08:12:00 AM »

That'd do it - deffo on the 10k then. Maybe leave the switch internalised so you've gotta pop the hood to enable it - saves any accidental switching on.....

I've got a spare room carpet full of smd leds from coughing whilst soldering - reckon if I ran current through my carpet, it'd glow smile.gif
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torne

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Dual Nand Setup, To Wp Or Not To Wp
« Reply #3 on: December 04, 2009, 05:06:00 AM »

It's a very very bad idea to write protect the NAND without removing R6T3. If you accidentally apply an update on such a console, it will blow the efuses that allow the old version of CB to run *first*, then it will fail to flash the new CB because the NAND is write protected. This produces a bricked console which can only be recovered by rebuilding the NAND manually...

If you intend to keep the free60 exploit then you will never need R6T3 connected again, you can just remove the resistor permanently. You only need R6T3 to update to new dashboards via the official updates.
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torne

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Dual Nand Setup, To Wp Or Not To Wp
« Reply #4 on: December 08, 2009, 07:00:00 AM »

There is no need to have a switch; you will *never* want to connect R6T3 again.
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