I write this small tutorial for newbie , every day i reply for thread with question : What is dump , where is eprom , what is it , how to read it ...ect Here is a small tutorial for these kind of info spécial NEWBIE . How to decode radio by reading eeprom dump : 1- Eprom or Mcu memory : There is lot of model radio mémory who store radio configuration and code sécurity . Most of Radio contain an eprom : ( 24cXX , 93cXX ) or Mcu like ( Motorola 68Hc***X ) This is an eprom : 2- Where is the eprom radio located ? Of course , eprom is in mainboard or some radio's have it in tuner ( Kenwood , Clarion ...etc ) 3- How to read Eeprom Dump : You need an eeprom programmer , like PONYPROG , it's cheap if u like to buy it , and easy to make if you have patience , knowledge and fun to make it Here is all schematic 4- What's a Dump : In radiocar domaine a dump is a back up that you made from the mémory of your radio ( eeprom or mcu ) , The Extension of a dump is most of case : .HEX .BIN .E2P 5- Wich soft i need to read dump ? There is lot of software , the most used are : - Ponyprog - Ic Prog After that u read dump , and u will ask ur self : Now how can i get code from this dump , so at this time come and post it here , we will help you with the correct code . If there is somethink not clear , thread is opened for all question .