Could anybody make Cubide work with STM32F7508-DK board?

first of all i had the FLASH problem (the MCU only has 64KB FLASH) so i brought up the external memory but is not possible to make debug aparently. As an evaluation board im a little dessapointed, couldnt find much support anywhere. i have been a couple of days traying to make it work. i comes with an touchgfx demo but i couldnt make it work with touchgfx tool either.