Why you don´t ask Lynxman? Maybe you will find this guy in the AA Forum.
Oh wait, I am this guy.
First change the setting "Newline at" to "CR+LF".
Did you read the manual? Maybe it will help.
Please send the "s" command to get the systeminfo.
Please provide a screenshot.
Depend on the Firmware installed, automode is implemented.
If the header is correct, you don´t need to care about the memory setting.
Latest Firmware for 1.913 is V6.40
Please note: i found a little bug in the Firmware. After Firmware update or if you perform reset, you have to change the memory setting 1 time to make sure the FlashCard is working well.
I will release a Firmware with bugfix soon.
Please note: I made my FlashCard design for development. Anyway, you can play all games released. As long as no game is bigger then 512k, it will work.