IR Toy Linux firmware upgrade program

Ynezz posted an IR Toy Linux firmware upgrade program:

I’ve added similar stuff to the fw_update util directly, the modified source can be downloaded from my GitHub repository. It uses my librs232, so it should work on Linux/Win.
I’ve tested it only on Linux. The repository contains also fix for usb interface claiming. It works now something like that:

$./fw_update -e -w -v -m flash -vid 0x04d8 -pid 0xfd0b -port /dev/ttyACM0 -ix ../../USBIRToy.X.production.hex
rs232: switching device into bootloader mode…
rs232: waiting 2 seconds for bootloader…
usb interface claimed by the kernel driver usbhid, dettaching…OK
U2IO flash erasing: DONE.
U2IO flash programming: DONE.
U2IO flash verifying: DONE.
RESET Device
Operation successfully completed.