Will a genuine Arduino board have the same issues with High Sierra as other non genuine ones? I think my question is quite specific to High Sierra. I am very new and have bought a starter Elegoo kit to learn the basics. I did not realise that their boards are not the real thing. 

I have an iMac running High Sierra and although the Mac recognises the board (I checked this through the apple menu) every time i try to upload code i get the error message:

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

I have watched several videos on line that have taken me through installing drivers including one specific to High Sierra. However the problem continues.

Does anyone know if i buy a genuine Arduino board, will i have the issues? Will Arduino just not work with High Sierra.

Any help or advice would be so appreciated by someone very new and trying to learn!

Thank you 

Paddy
As long as the firmware on the ATMega16U2 chip is the same as on a Genuine Arduino and the bootloader on the ATMega2560 chip is the same as on a Genuine Arduino then your boards should function exactly the same as a Genuine Arduino.

If you find a Genuine Arduino works but your boards don't then there must be a difference, and that can really only be in the software on the chips - so reprogramming the chips to match a Genuine Arduino would probably help.

I haven't heard reports of High Sierra not working with Genuine Arduino boards, but given the severity of some of the bugs that have crept in recently, it seems likely that more problems are hidden away under the hood that no one really knows about yet.