Firmware for MEGA

Hello all
I'm using ubuntu on my Arduino Mega with the bug on serial Port busy.
Today I try to update the firmware but I cant find the firmware for it
Can someone give me the .hex for Mega?

Its in the 0022 release in the hardware/arduino/firmwares/ directory I believe.

Also here's the howto page: http://arduino.cc/en/Hacking/DFUProgramming8U2

Thanks
Until I was waiting for some tip I had found the solution to the problem very well explaned

I found this info
I have tested it and my board is back to live :slight_smile:

I got the firmware from here:
https://github.com/arduino/Arduino/tree/master/hardware/arduino/firmwares/arduin…(click on the right firmware, then click raw, then save it)

Reflashing the firmware on the 8u2 is a little tricky. Don’t try this unless you are prepared to risk bricking your board completely!

You need the dfu-programmer utility:
sudo apt-get install dfu-programmer

Then follow the instructions here to get the Uno into DFU mode:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1285962838/10#10

Then to flash the firmware, do this:
sudo dfu-programmer at90usb82 erase
sudo dfu-programmer at90usb82 flash --debug 1 Arduino-usbserial-uno.hex
sudo dfu-programmer at90usb82 reset

Finally unplug the USB plug, wait a few seconds, plug back in.

Here is also the .hex ready to upload to the board

Arduino-usbserial-mega.hex (11.2 KB)