I received my concerto some time ago. I haven't been able to start a game until today !!!
First I tried it on my well-functioning PAL-7800. Here I come into the menu. The games seem to load at first. The bar usually stays at 80%. If it goes to the end, a black screen appears. With some games the bar does not even start to run. Flashing the firmware worked again, but the problem did not change.
Because I was so annoyed about it, someone here in Germany converted a ProSystem (i.e. NTSC), which is expensive and difficult to obtain, with a UAV. It works without any problems with NTSC carts.
But now the hammer:
I can't even get to the menu with the same Concerto and the same SD cards! After flashing the firmware again, it is confirmed that the flashing of firmware 0.95 worked. If I then confirm the message with a fire button, the disk will turn for eternity.
If I then switch off the console with the on / off switch and restart it (this is the recommendation in the description for flashing!), This colorful screen appears, which at the end turns light blue, sometimes red.
If I do not flash and start the Concerto normally, this colorful screen also appears.
There are so many NTSC users around here, has anyone seen it in their home or has any advice?
It's depressing that not a single game works on both consoles.
With kind Atari greetings from Germany
Franky99