Bootloader uploads to Uno but not the Target Board

OK, SO I'm new to the Arduino world. I bought an Arduino Uno(Com4) to flash a bootloader to my CR-10 3D printer(Com3). The IDE see's the Uno no problem and that transfers data just fine when I upload the ArduinoISP to the UNO. When I try to burn the bootloader to the 3Dprinter board I get this error(yes I switched to Com3):

Arduino: 1.8.5 (Windows 10), Board: "Sanguino(1284P Boards), ATmega1284 or ATmega1284P (16 MHz)"

C:\Stuff\TH3D_UnifiedFirmware_U1.R1.2\TH3D_UnifiedFirmware_U1.R1.2\Windows Arduino\hardware\tools\avr/bin/avrdude -CC:\Stuff\TH3D_UnifiedFirmware_U1.R1.2\TH3D_UnifiedFirmware_U1.R1.2\Windows Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega1284p -cstk500v2 -Pusb -e -Ulock:w:0x3F:m -Uefuse:w:0xFD:m -Uhfuse:w:0xDE:m -Ulfuse:w:0xFF:m

avrdude: Version 6.3, compiled on Jan 17 2017 at 12:00:53
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch

System wide configuration file is "C:\Stuff\TH3D_UnifiedFirmware_U1.R1.2\TH3D_UnifiedFirmware_U1.R1.2\Windows Arduino\hardware\tools\avr/etc/avrdude.conf"

Using Port : usb
Using Programmer : stk500v2
Error while burning bootloader.
avrdude: usbdev_open(): did not find any USB device "usb" (0x03eb:0x2104)

avrdude done. Thank you.

When I "Get Board Info" , I get this response (see attached image "board info.png")

board info.PNG

I upload the ArduinoISP to the UNO

C:\Stuff\TH3D_UnifiedFirmware_U1.R1.2\TH3D_UnifiedFirmware_U1.R1.2\Windows Arduino\hardware\tools\avr/bin/avrdude -CC:\Stuff\TH3D_UnifiedFirmware_U1.R1.2\TH3D_UnifiedFirmware_U1.R1.2\Windows Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega1284p -cstk500v2 -Pusb -e -Ulock:w:0x3F:m -Uefuse:w:0xFD:m -Uhfuse:w:0xDE:m -Ulfuse:w:0xFF:m

You need to set the "Programmer" to "Arduino as ISP" and not "ArduinoISP" (or whatever else it might be set to.)

(yes I switched to Com3)

You should still be on COM4, as you need to be talking to the Uno that is running "Arduino as ISP" rather than the Sanguino, while you're burning the bootloader.

That did it...Thank man. :slight_smile: