Hello!
I am about to install the K8204 Z-axis upgrade and the new firmware to support this, I can’t find a firmware that goes for only the K8204 upgrade, only the one for both K8203 and K8204. Is this the one I am supposed to use and do I need to edit something in the code to tell it that I do not have a K8203 extruder upgrade?
Also is there something else I need to edit in the firmware? I see that for example no electronics board is uncommented…
Try this one.
http://www.k8200.eu/downloads/files/downloads/firmware_k8200_v2.1.1.zip
[color=#BF0000]This version supports the K8204 Z AXIS UPGRADE ROD AND COUPLER FOR K8200 and the VM8201 LCD and SD card controller. DO NOT FORGET TO RESET YOUR EEPROM SETTINGS AFTER THE UPGRADE!. Copyright © 2011 Camiel Gubbels / Erik van der Zalm
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It’s the last file under download before the K8203
Yes I saw my error there, and I got it working now. Thanks for your assistance 
Glad to hear it’s up and running.
Enjoy!
This firmware gives an error with me when i try to compile the sketch.
Exit status 1
using typedef-name ‘fpos_t’ after ‘struct’
I’m using marlin Arduino 1.6.10
with the firmware from the link above
use Ardunio 1.0.6 or below from here.
https://www.arduino.cc/en/Main/OldSoftwareReleases#previous
Don’t forget to short the Jprog pins