28 lines
1.4 KiB
Plaintext
28 lines
1.4 KiB
Plaintext
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PART XIII. EQUATIONS FOR PROGRAMMING THE CHIPS
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In most instances, you will not be able to tell the code on a PROM
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because the manufacturer will have blown the security fuse in order to
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prevent people from obtaining the codes to reprogram their own chips.
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Therefore, it might be necessary to produce a set of equations that are
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programmed into the cip to produce a bogus ESN. The bogus chips must contain
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the first three digits of the manufacturer's code listing, which is
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consequently the first marker of the actual ESN. Experimentation might be
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necessary, but hey, isn't that half the fun?
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With the aid of an EPROM emulator, the whole process should be able
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to be completed in under an hour - this includes pulling the chip, creating
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a new ESN, programming the chip, and replacing it.
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So know you're saying "Holy Cow this project is getting expensive!".
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Well it can get that way, but the long run payoff is worth it. I have seen
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both emulators and burners for under $200 (I'm not talking about those spiffy
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models that program RAM, just the basic EPROMs...in fact I can buy them for
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under $150. Same with the emulator. Just look around.)
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I wouldn't be surprised if actual ESN data started appearing on
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boards in the near future. I know when I finsish my phone (Hopefully soon)
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I plan on U/L the ESN info somewhere.
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