Below are the different types of JP1 remotes, where the type is indicated on the circuit board beside the JP1 connector. All these flash based JP1 remotes are called "JP1 (Flash)" (also JP1.x, JP1.1, JP1.2, JP1.1/2, JP1.2/3 or JP1.3). Furthermore, the access method sometimes changes when they switch from one brand of flash chip to another. The protocol needed to access the flash chip is completely different to that needed to access the old EEPROM chips. Then they switched to using flash based MCU chips, which meant it was no longer necessary to have a separate EEPROM chip. These remotes are called JP1 or "JP1 (EEPROM)" Their older remotes had a separate MCU chip and an EEPROM chip, with all the JP1 activity occurring on the EEPROM chip, so it didn't matter what brand and model of MCU they used because the access to the EEPROM was the same. There are currently two basic types of JP1 interfaces: JP1 (Flash) and JP1 (EEPROM). They change the way they build remotes every so often such that they require a different type of interface. and the technical details with a brief history of JP1 interface designs at Interface Types Lists of JP1 remotes and the type of interface each requires can be found at But over the years, new types of JP1 remotes have been introduced which require different interfaces, the latest being USB. The first JP1 remotes had the same interface. Otherwise you can build your own or purchase one from any one of several vendors. In order to use the JP1 software to program your remote, you need an interface to connect the remote to your computer, for which several models now include a USB lead as original equipment.
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