MEGA 2560 Rev3 flashing issue

[cadogan207]

EDIT: I just found your email Dimitri so i'll email you the question. Just figured it wasn't so much related to the firmware itself. Delete this message if you like.ty

I have the mega 2560 Rev3 (authentic) arduino and i'm have problems trying to flash it with a usbtinyISP.

Not sure which one i ended up flashing ( arduino_midi.hex, usbserial_mega_16u2.hex) but it semi-bricked my arduino. Luckily i was able to get it back up and working using the regular .hex file bootloader. Now out of those 2 firmwares, which one are we supposed to install on the arduino? Pretty sure mine is the '16u2' but don't know why there is 2 seperate ones.

Is the usbtinyISP compatible with the Mega 2560 rev 3, did i flash it wrong or do i need something like the USBASP in order to get it to work? I have only 1 arduino so i cant use it as a programmer. I found an article saying it is possible with the usbtinyISP but, i had nothing but problems trying to get it to flash. Please help.ty.

www.codetinkerhack.com/2013/08/enabling-usb-on-arduino-midi-keyboard.html