$ sudo avrdude -p atmega32u4 -P /dev/ttyACM1  -c avr109  -U flash:w:Soarer_Controller_v1.20_beta4_atmega32u4.hex

Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
    Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.

Programmer supports the following devices:
    Device code: 0x44

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e9587 (probably m32u4)
avrdude: NOTE: "flash" memory has been specified, an erase cycle will be performed
         To disable this feature, specify the -D option.
avrdude: erasing chip
avrdude: reading input file "Soarer_Controller_v1.20_beta4_atmega32u4.hex"
avrdude: input file Soarer_Controller_v1.20_beta4_atmega32u4.hex auto detected as Intel Hex
avrdude: writing flash (17726 bytes):

Writing | ################################################## | 100% 1.85s

avrdude: 17726 bytes of flash written
avrdude: verifying flash memory against Soarer_Controller_v1.20_beta4_atmega32u4.hex:
avrdude: load data flash data from input file Soarer_Controller_v1.20_beta4_atmega32u4.hex:
avrdude: input file Soarer_Controller_v1.20_beta4_atmega32u4.hex auto detected as Intel Hex
avrdude: input file Soarer_Controller_v1.20_beta4_atmega32u4.hex contains 17726 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 0.56s

avrdude: verifying ...
avrdude: 17726 bytes of flash verified

avrdude: safemode: Fuses OK (E:C3, H:D8, L:FF)

avrdude done.  Thank you.