It is possible to harm them, I guess.
I have unlocked countless Duron\Athlon\XP CPU's. And I have apparently crossed some of the bridges a few times. And what happened was that the system would not run, AT ALL.
Some nail polish remover took care of my connections and the CPU also because they all ran fine again. Eventually I unlocked em all and all ran fine.
BUT, there are claims that some people have tried it and apparently made a mistake and it fried the CPU. I have to reserve comment on that because it cant be disproved, but as I said, I have made a few boo boo's and removing the conductive traces restored the CPU to perfect working order.
On the XP's though. You must fill in the tiny gap you will see between the bridges. If the material goes in there it will result in failure 100% of the time.
2 drops of super glue, 2 pieces of tape and 2 minutes will take care of that.
And if you get those little barriers between the bridges, draw\paint around them.
[This message has been edited by dmm (edited 05-05-2002).]
i7 2600k @ 4.6 ghz by Turbo multi - MSI Z68A-GD65-G3 - 8 gig GSkill Ripjaws @ 1600 8-8-8-24 - Corsair H100 Closed loop water cooling - GeForce GTX 770 - 256 gig Mushkin Enhanced Chronos Deluxe and 250 Gig WD Blue Series - PCP&C Turbocool 850 SSI