unable to make Grains speak with my Macbook pro OS 10.14

Hello sorry as i'm a big noob in Arduino stuff.

I just can't sync the Grains board to my computer, I've tryed  with (old bootloader( option for processor) I've tryed to install CH340 drivers, but as I am on MOJAVE, some say i would'nt need it... tryed several USB cable....

Is there  something to choose with "programmer" menu ? I'm on AVRISP mk 2

the "get board info" gives : board :"unknown" :

BN: Unknown board
VID: 1A86
PID: 7523
SN: Upload any sketch to obtain it

here is the error messages i get when trying to upload  gingko firmware casio rz21. Thank you for any help .... I just can't make my Grains speak with my mac

Also : i've tryed to install ARDUINO IDE 2.2 but it does'nt open properly ( no window, no settings, just a blank app running)

Arduino: 1.8.19 (Mac OS X), Board: "Arduino Nano, ATmega328P (Old Bootloader)"

Sketch uses 27378 bytes (89%) of program storage space. Maximum is 30720 bytes.
Global variables use 1109 bytes (54%) of dynamic memory, leaving 939 bytes for local variables. Maximum is 2048 bytes.
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00
Problem uploading to board. See support.arduino.cc/hc/en-us/sections/360003198300 for suggestions.


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