What is a "Dual Boot" chip and how to make one.

A "Dual Boot" chip is one that contains two versions of firmware which is selectable by a switch on the back of your player. People usually get a Dual Boot chip containing two different regions of the same firmware, however making a Dual Boot chip isn't only limited to two different regions of the same firmware. You can Mix and Match to your liking. Say you want "A8" for the loophole menu but you also want "N5" to fix the bugs. Well, you can! Here I will show you, step by step, how to make a "Dual Boot" chip.

First, the standard disclaimer:

DOING THIS MODIFICATION NEEDS SOME ELECTRONICS EXPERTISE. IF YOU FEEL YOU CAN'T DO THIS MODIFICATION BY YOURSELF, SEEK ADVICE OR HELP FROM SOMEONE WHO CAN. I WILL NOT BE HELD RESPONSIBLE!

Are you still with me? Good! Let's get on with it.

There are two ways of making a "Dual Boot". You can use a single EPROM which can hold two firmware versions, of you can use two EPROM's each with their own firmware and switch between them.

STOP!!!!

Does your AD-600A have a FlashROM fitted? Do you know what the difference between a PROM, EPROM and FlashROM is? Click HERE to find out more before continuing any further.....

Choose which method you want to look at:

One EPROM sytle......................Two EPROM "PIGGYBACK" style.