我的电脑有类似问题Sainsmart Nano。
在Preferences过程中勾选“显示详细的输出[X]上传,然后上传时,你应该得到一个红色曲线是这样的:
avrdude: Version 5.11, compiled on Sep  2 2011 at 18:52:52
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch
         System wide configuration file is "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/etc/avrdude.conf"
         User configuration file is "/Users/johannes/.avrduderc"
         User configuration file does not exist or is not a regular file, skipping
         Using Port                    : /dev/tty.usbserial-A403MRTP
         Using Programmer              : arduino
         Overriding Baud Rate          : 57600
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
在的第一行之前,您会注意到一些“暂停” avrdude: Send: 0 [30]   [20]。尝试再次上传,让您准备好自己的物理重置按钮Nano。在第一个avrdude: ...出现之前,请按重设按钮。
成功后,您会看到屏幕上出现各种乱七八糟的东西,并在几秒钟后结束了类似的事情:
[78] . [00] S [53] h [68] o [6f] u [75] l [6c] d [64]   [20] b [62] e [65]   [20] 0 [30] x [78] 4 [34] 9 [39] D [44] 4 [34] . [00] . [01] . [00] . [00] . [00] . [02] . [00] . [03] . [00] . [04] . [00] . [00] . [00] . [00] . [00] . [e6] . [06] . [b5] . [06] n [6e] . [06] w [77] . [06] . [8c] . [06] . [9d] . [06] . [00] . [00] . [00] . [00] . [02] . [0d] . [aa] . [0d] . [95] . [0c] . [c9] . [0c] . [a9] . [0c] . [f2] . [0c] . [00] 
avrdude: Recv: . [10] 
# | 100% 3.71s
avrdude: verifying ...
avrdude: 8824 bytes of flash verified
avrdude: Send: Q [51]   [20] 
avrdude: Recv: . [14] 
avrdude: Recv: . [10] 
avrdude done.  Thank you.
               
              
Features: Automatic reset during program...