See HDDOracle.com for fzabkar's tutorials on analyzing ROMs. I have no idea why you are having problems finding the WWN value in ROM dumps. What are you using to read and save ROMs? To be clear, it's the ROM.bin file you are searching with a hex editor?
I tried using my iSesamo spudger, which has a knife-like pointed end, but it will damage the aluminum plate insert or container if I get any more forceful with it. I've asked the customer if he minds me damaging the case, so will update if he says no problem.
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