uff finally
i re-flash the PI (i was getting some xserver missing when installing KlipperScreen), so i had to throw post:
and 1-2 more and still was getting mcu
then i reflash the printer with a firmware.bin—still MCU
then reflash wth the klipper.bin (with the confg, i prevew post for my board) and when connect to mainsail boom…
so thanks very much @LifeOfBrian @Sineos iwont done it with out your guides XD