Mac OS High Sierra / IDE 1.8.5 uploading error

Development Tools IDE 1.x
1

i recently bought a new MBP 15" with touchbar running 10.13.2. I am now receiving the following errors when I try to upload a sketch to my Uno R3 boards.
Arduino: 1.8.5 (Mac OS X), Board: "Arduino/Genuino Uno"

Sketch uses 1122 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -carduino -P/dev/cu.usbmodem1461 -b115200 -D -Uflash:w:/var/folders/gj/d7g103z978g6zjgt14vd2fy00000gn/T/arduino_build_189141/forward_back.ino.hex:i

avrdude: Version 6.3, compiled on Jan 17 2017 at 12:01:35
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf"
User configuration file is "/Users/mike/.avrduderc"
User configuration file does not exist or is not a regular file, skipping

Using Port : /dev/cu.usbmodem1461
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00

avrdude done. Thank you.

An error occurred while uploading the sketch

I have tried many solutions, but none have worked for me. I have tried uninstalling 1.8.5 and reinstalling it a couple of times.

2

no solution yet? I just upgraded high sierra last night and haven't found any fix

3

That is a completely generic error message, "There's a serial adapter here, but we don't get the response we expect when trying to talk to the chip".

It's unlikely to be a driver problem (though it could be - unfortunately there are a few cases recorded of drivers in a half-working state where they appear to the program to work as a com port, but don't actually send or receive anything); usually it indicates problems with wrong board selected, wrong port selected, or a hardware issue (such as things connected to pins 0, 1, or reset)

But to be clear, you'd get the same error if you cut the board in half and threw away the part with the '328p on it). It's a very generic error, because there's no channel through which the computer can get more information on why it's not working.

4

Hello,

I've just installed Arduino environment on my Mac with High Sierra and came with same error. I have used the solution of this video and worked fine