Re: CP4 Firmware Upgrade Failure

Ray Gralak

Hi Jack,
Maybe that's just a typo but I think the IP address should start with 169, not 168.

-Ray Gralak
Author of APCC (Astro-Physics Command Center):
Author of PEMPro V3:
Author of Astro-Physics V2 ASCOM Driver:

-----Original Message-----
From: [] On Behalf Of Jack Huerkamp
Sent: Sunday, April 26, 2020 2:02 PM
Subject: [ap-gto] CP4 Firmware Upgrade Failure

I found my Astro Physics username and password. I downloaded the latest CP4 firmware package and unzipped
the contents into a folder on my desktop I printed out the installation instructions and I got as far as "Determine
Your IP Address"

I tried three different CAT6 cables connected to the Ethernet port on the CR4 and to my computer. Since my
serial number is CP4-0109, I calculated that the IP address would be:

I disconnected the keypad from the CR4 and I also disconnected the Serial connection to the top DB9 connection
(I connect to the mount via a Serial to USB on to the computer.) I left the power cable, the CAT6 cable and the
Wye Motor cable connected to the CP4.

Since I have APCC Standard (latest version), I tried starting it to get/verify the IP address. When I selected TCP
LAN/WiFi or UDP LAN/WiFI, I got an invalid V Chip error.

I closed APCC and tried using Edge, Mozilla and MX5 browsers to access In all cases the
browser timed out.

So now I cannot get a browser to recognize the IP address of the CP4.

Now what?

Can I remove the VP4 from the mount, bring it into the house, power it up and try connecting it to my computer
with a short CAT6 cable to update the firmware?

Yours truly,

Jack Huerkamp

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