Problem with Cyclone III Remote Update IP?

I have successfully used the Cyclone III update.

Some thoughts:

Can you try running it at 40 MHz just to be certain the 50 Mhz main clock is not the problem?

The basic steps that are working for me:

1. Set image address shifted by 2 bits to register 0x04.

2. Disable watchdog by writing 0 to register 0x03.

3. Write 1 to register 0x20.

For serial config mode, shifting the address by 2 is required. I seem to recall some Altera sample code shifting by 3, but I think this may have been for parallel configuration.