You'll need:
- a simple FTDI-based JTAG/SPI/UART tool. Buy one or, build one yourself. It is a very usefull tool to have.
- an AT45DB011D IC with unprogrammed security register
- this script to flash the security register on your AT45DB011D
- a bunch of wires
- a soldering iron
- a needle
- steady hands
Use pip to install pyftdi before running the script.
Warning: there is a fair chance of bricking your console. Do it on your own risk.
Note: The security register inside an AT45DB011D is OTP (one time programmable). If you mess it up, there will be no second chance with the same IC. Buy a bunch if you want to experiment a bit.
Here we go:
- use your steady hands and a soldering iron to connect wires right to the AT45DB011D terminals
- use this schematics to connect the AT45DB011D to your FTDI JTAG/SPI tool
- run the script
- cut the wires so that the IC fits inside the WetherLink compartment inside the console
- don't strip the wires
- push a needle ~2mm deep through the end of each wire. Keep the needle straight so it won't pierce through the insulation
- connect the wires to the console's extension header
- connect UART port terminals in the same way
- you can use your FTDI tool in serial mode to test that it works