Shows up in RetroPie as Pro Controller.
\\retropie\configs\all\retroarch\autoconfig\Pro Controller.cfg
Note After Firmware Update I this name changed from SN30 to Pro Controller and so did mapping see Old Site and 2019 sub page.
If I update firmware again my guess is all these mappings and names are BS.
Run winscp and navigate to:
/opt/retropie/configs/all/retroarch-joypads/Pro Controller.cfg
Here is what I got and I think this is good:
input_device = "Pro Controller"
input_driver = "udev"
nput_a_btn = "1"
input_a_btn_label = "A"
input_b_btn = "0"
input_b_btn_label = "B"
input_device = "Pro Controller"
input_down_btn = "h0down"
input_driver = "udev"
input_enable_hotkey_btn = "8"
input_exit_emulator_btn = "9"
input_l_btn = "4"
input_l_btn_label = "L"
input_l_x_minus_axis = "-0"
input_l_x_minus_axis_label = "Left Analog X-"
input_l_x_plus_axis = "+0"
input_l_x_plus_axis_label = "Left Analog X+"
input_l_y_minus_axis = "-1"
input_l_y_minus_axis_label = "Left Analog Y-"
input_l_y_plus_axis = "+1"
input_l_y_plus_axis_label = "Left Analog Y+"
input_l2_btn = "6"
input_l2_btn_label = "ZL"
input_l3_btn = "10"
input_left_btn = "h0left"
input_load_state_btn = "4"
input_menu_toggle_btn = "3"
input_r_btn = "5"
input_r_btn_label = "R"
input_r_x_minus_axis = "-2"
input_r_x_minus_axis_label = "Right Analog X-"
input_r_x_plus_axis = "+2"
input_r_x_plus_axis_label = "Right Analog X+"
input_r_y_minus_axis = "-3"
input_r_y_minus_axis_label = "Right Analog Y-"
input_r_y_plus_axis = "+3"
input_r_y_plus_axis_label = "Right Analog Y+"
input_r2_btn = "7"
input_r2_btn_label = "ZR"
input_r3_btn = "11"
input_reset_btn = "0"
input_right_btn = "h0right"
input_save_state_btn = "5"
input_select_btn = "8"
input_select_btn_label = "Select"
input_start_btn = "9"
input_start_btn_label = "Start"
input_state_slot_decrease_btn = "h0left"
input_state_slot_increase_btn = "h0right"
input_up_btn = "h0up"
input_x_btn = "3"
input_y_btn = "2"
This config keep Select as the default Hot Key.