PART XIII.             EQUATIONS FOR PROGRAMMING THE CHIPS



        In most instances, you will not be able to tell the code on a PROM

because the manufacturer will have blown the security fuse in order to 

prevent people from obtaining the codes to reprogram their own chips.

Therefore, it might be necessary to produce a set of equations that are

programmed into the cip to produce a bogus ESN.  The bogus chips must contain

the first three digits of the manufacturer's code listing, which is 

consequently the first marker of the actual ESN.  Experimentation might be

necessary, but hey, isn't that half the fun? 



        With the aid of an EPROM emulator, the whole process should be able

to be completed in under an hour - this includes pulling the chip, creating

a new ESN, programming the chip, and replacing it.



        So know you're saying "Holy Cow this project is getting expensive!".

Well it can get that way, but the long run payoff is worth it.  I have seen

both emulators and burners for under $200 (I'm not talking about those spiffy

models that program RAM, just the basic EPROMs...in fact I can buy them for

under $150. Same with the emulator. Just look around.)



        I wouldn't be surprised if actual ESN data started appearing on 

boards in the near future.  I know when I finsish my phone (Hopefully soon)

I plan on U/L the ESN info somewhere.



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