To all android users who have issue with saving their gamepad binding and the overlay impossible to deactivate:
i ve found something useful to avoid binding all the gamepad each time
after having bind all the buttons in the RGUI, click on 'save new config". it will create a retroarch-date-.cfg file in the data\data\com.retroarch.com folder. copy this file to a full read and write folder of your choice like your sdcard. edit the file with any text editur, find the line input_overlay and edit it :input_overlay = āfalseā then at each startup, you just click on āconfigurationā in the rgui and select your cfg file !!
it works perfectly with the 28-11 release ! now we just have to find how to load this cfg file automatically