I did as you wrote in first post, delete /home/.sorrv5a. Then I run the game from the SD card
I have the same thing : when running again the game, it's like it was the first time. Which is strange is that the folder and savegame file was created.
I did the same, with deleting the folder, from the internal memory and the same thing occured.
Every time, after changing controls, I launch a game and play a little, then quit back to the menu, and then push on Select to quit the game back to the menu of the Zero.