# After flashing on os x, no keypresses sent **URL:** \ **Category:** Programming\ **Tags:** question\ **Created:** [December 1, 2017, 2:00am UTC](https://community.keyboard.io/t/after-flashing-on-os-x-no-keypresses-sent/815 "2017-12-01T02:00:01Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![Benji](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.keyboard.io/benji/32/355_2.png) [@Benji](https://community.keyboard.io/u/Benji)\ **Post date:** [December 1, 2017, 2:52am UTC](https://community.keyboard.io/t/after-flashing-on-os-x-no-keypresses-sent/815/3 "2017-12-01T02:52:42Z")
Well, dang. I took the left enclosure off, and I’m pressing the reset button, but I can’t get my keyboard to work again at all. I’ve tried several different orders of operation for hitting the reset button, hitting the upload button, and hitting the prog button – it all comes to naught though. Procedure: 1. in Arduino GUI, go to File =\> Examples =\> Keyboard IO =\> Model 01 Firmware 2. With left enclosure removed, depress then release the little white button. The red light behind the prog button comes on. 3. Hit the right-arrow in arduino UI that means 'upload’ The red light for the prog key goes out; the blue light under the LED key goes on briefly, then goes off. about another 1min goes by, ending with `the selected serial port does not exist or your board is not connected`. Complete output from upload: ```auto Sketch uses 18972 bytes (66%) of program storage space. Maximum is 28672 bytes. Global variables use 1941 bytes (75%) of dynamic memory, leaving 619 bytes for local variables. Maximum is 2560 bytes. Low memory available, stability problems may occur. Forcing reset using 1200bps open/close on port /dev/cu.usbmodemCkbio01 PORTS {/dev/cu.Bluetooth-Incoming-Port, /dev/cu.usbmodemCkbio01, /dev/tty.Bluetooth-Incoming-Port, /dev/tty.usbmodemCkbio01, } / {/dev/cu.Bluetooth-Incoming-Port, /dev/cu.usbmodemCkbio01, /dev/tty.Bluetooth-Incoming-Port, /dev/tty.usbmodemCkbio01, } => {} PORTS {/dev/cu.Bluetooth-Incoming-Port, /dev/cu.usbmodemCkbio01, /dev/tty.Bluetooth-Incoming-Port, /dev/tty.usbmodemCkbio01, } / {/dev/cu.Bluetooth-Incoming-Port, /dev/tty.Bluetooth-Incoming-Port, } => {} PORTS {/dev/cu.Bluetooth-Incoming-Port, /dev/tty.Bluetooth-Incoming-Port, } / {/dev/cu.Bluetooth-Incoming-Port, /dev/cu.usbmodemCkbio01, /dev/tty.Bluetooth-Incoming-Port, /dev/tty.usbmodemCkbio01, } => {/dev/cu.usbmodemCkbio01, /dev/tty.usbmodemCkbio01, } Found upload port: /dev/cu.usbmodemCkbio01 /Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega32u4 -cavr109 -P/dev/cu.usbmodemCkbio01 -b57600 -D -Uflash:w:/var/folders/2b/p4bk_ptx31n2578xq79ktnzc0000gn/T/arduino_build_182967/Model01-Firmware.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/ben/.avrduderc" User configuration file does not exist or is not a regular file, skipping Using Port : /dev/cu.usbmodemCkbio01 Using Programmer : avr109 Overriding Baud Rate : 57600 AVR Part : ATmega32U4 Chip Erase delay : 9000 us PAGEL : PD7 BS2 : PA0 RESET disposition : dedicated RETRY pulse : SCK serial program mode : yes parallel program mode : yes Timeout : 200 StabDelay : 100 CmdexeDelay : 25 SyncLoops : 32 ByteDelay : 0 PollIndex : 3 PollValue : 0x53 Memory Detail : Block Poll Page Polled Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- --------- eeprom 65 20 4 0 no 1024 4 0 9000 9000 0x00 0x00 flash 65 6 128 0 yes 32768 128 256 4500 4500 0x00 0x00 lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00 calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00 signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00 Programmer Type : butterfly Description : Atmel AppNote AVR109 Boot Loader Connecting to programmer: .avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding Found programmer: Id = ""; type = ( Software Version = .�; Hardware Version = . avrdude: butterfly_recv(): programmer is not responding avrdude: butterfly_recv(): programmer is not responding avrdude: error: buffered memory access not supported. Maybe it isn't a butterfly/AVR109 but a AVR910 device? avrdude: initialization failed, rc=-1 Double check connections and try again, or use -F to override this check. avrdude: butterfly_recv(): programmer is not responding avrdude: error: programmer did not respond to command: leave prog mode avrdude: butterfly_recv(): programmer is not responding avrdude: error: programmer did not respond to command: exit bootloader avrdude done. Thank you. the selected serial port does not exist or your board is not connected ``` and yet, i can’t send keypresses; the one thing that seems to work is changing LED mode. How can I get back to factory state? I saw @jesse’s thread [Flashing problem on Ubuntu (SOLVED)](https://community.keyboard.io/t/flashing-problem-on-ubuntu-solved/628/13?u=benji) but that is both off the cuff and perhaps linux specific. I’m using OS X 10.13.1. --- _[View the full topic](https://community.keyboard.io/t/after-flashing-on-os-x-no-keypresses-sent/815)._