Wow your stock firmware is lower than the stock firmware I got when my unit arrives.
You may have the wrong configuration software for your firmware version. You cannot simply just grab anyone you find on the internet.
Try this one. http://www.radioddity.com/skin/frontend/default/lanting/download/20140505%20ap510.rar
So far I have only gotten this to work on Windows, it will run under Wine but won’t connect. On windows XP these files AVRTTupdata.exe.zip and the VB6 runtime will be enough. On any newer windows MSCOMM32.OCX and MSSTDFMT.DLL will be required as well.
Connect to the serial port @ 9600 Baud 8-N-1.
The normal Debian installation instructions are good, remember to use wheezy as DISTRIBUTION in sources.list:
http://he.fi/aprsc/INSTALLING.html
If you've installed aprsc by hand before, remember to remove it first. Make a backup copy of aprsc.conf, and "sudo dpkg --purge aprsc". If /opt/aprsc doesn't disappear completely, reboot and "sudo rm -rf /opt/aprsc".
Raspbian does not load IPv6 by default, and the default aprsc configs include dual-stack IPv4+IPv6 configuration (Listens on "::" - all IP addresses). You must load the IPv6 module to run aprsc with this default config:
sudo bash modprobe ipv6 echo ipv6 >> /etc/modules
The last command will make the ipv6 module load automatically after a reboot.
Yes, you need to do that even if you don't really have IPv6 on your network.
