one time programming
Code Patching for OTP microcontroller
By allankliu Mar 7th, 2008
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5 years ago, one of my colleagues developed a project upon 8051 platform. Unfortunately, there was a fatal bug in the firmware which would lead to a business fiasco and damage company's goodwill. Our boss asked us if there was any means to save the business and escape from the crisis. I knew that the microcontroller' intermal memory was actually using OTP (One Time Programming) EPROM technology, so I promised to study the code and try to hack it. |
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