First, built the modchip.

Here’s the orignal D2ckey.

Here’s what you need :

1. Clock 50,0M with Enable, It’s easy to see 4 pads connection. (VCC, Ground, in and enable)

2. A zener Ref 1n4148 ,

3. A SPI at least 1Mbytes.

Remove the resistance and the diode from the board.

Jump the point together

Install the zener

Now the SPI

Single Wire Pin: 01 02 04 05 06

Jump Pin: 07 08 + Wire

Link 07-08 to 03

Now install SPI to d2ckey

D2ckey side

- 03 to spi pin 01

- 02 to spi pin 02

- 01 to spi pin 06

- 00 to spi pin 05

- Ground to ground

Connect SPI wire that come from SPI pin 07-08 to diode on d2ckey on the outside side. *See picture below

Connect the clock.

Connect the JTAG

Pin from the top to the bottom 1 to 5 + Ground

Looks like :

Flash with d2prog:

Note: I got error on verify SPI due to an unknown reason but it flashed it properly anyway.

Works Fine that’s it.

Install d2ckey 9 wires now.