Problem with burning bootloader from Pro Micro to Uno

i unable load grbl uno board , read problem bootloader. tried burn pro micro, failed.

my steps:
1. modify programmers.txt add arduino isp (leonardo).
2. load arduinoisp sketch.
3. change reset pin 10 ss , upload pro micro.
4. connect icsp on uno leonardo, reset on uno going pin 10 on pro micro.
5. select arduino isp (leonardo) programmer.
6. burn bootloader.

it returns error:


using port                    : com1
using programmer              : arduino
avrdude: ser_open(): can't open device "\\.\com1": cannot find file.

note pro micro on com8, have turned com1 off sure...

i have managed update bootloader avrdude run command line, grbl uploads fine.

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