A critical aspect of the "1509" platform is hardware variation. Not all 1509 boxes are identical.
Modify system_menu.xml or C UI source:
menu_item_t main_menu[] =
"USB Firmware Update", update_firmware_fn, 1, // 1 = top
"Channel Scan", scan_fn, 0,
"Channel List", list_fn, 0,
...
;
Some top firmwares remap remote control keys. Download the "remote.ini" or "remote_code" file that matches your specific remote. 1509 dvbt2 512m firmware update top