I'm having a similar problem with two Audrino NANO's I just bought.
We shouldn't have to jump through hoops to get these things to work properly.
A problem which Arduino should fix.
The problem as it occurs with uploading to Nano with Arduino AVR Boards 1.6.21 can be solved by simply selecting Tools > Board > ATmega328P (Old Bootloader). There's no need to uninstall or downgrade anything.
I have the same issue while uploading program to my arduino uno board.I tried almost every suggestions available but none of them worked.I am only able to upload the blink program n make changes to it.Please help me.It's a request.
avrdude: stk500_recv(): programmer is not respondingavrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xb7
This out of sync business is driving me nuts. Recently on both Mac and Pi3, I upgraded to IDE 1.8.7. None of ny Uno nor Nano can upload my sketches except for Mega. I havn't figured out why yet but I suspect it is 1.8.7 bug or some thing. Do you use 1.8.7?