Burn bootloader to Arduino Mega 2560

Development Tools Uploading
1

I have an arduino mega 2560, in the last couple of weeks I messed with the driver IC (Atmega16u2) to turn it into a MIDI, turns out corrupted the driver somehow. Since then I used an arduino uno as ISP to upload my sketch to arduino mega. So just by today I finally found out how to restore the Atmega16u2 driver and now when I plug in my arduino mega, it finally appears in the ports.

And there is another problem. Turns out I can't upload my sketches to arduino mega even though the device appears in the ports. I thought it might be the bootloader. So I followed some instructions I found. And since I got an Arduino Uno this is the instructions I got.

  1. Upload the Arduino as ISP sketch to arduino uno.
  2. Connect Uno to Mega using SPI connection:-
    Uno:Mega
    10:RESET
    11:51
    12:50
    13:52
    5V:5V
    GND:GND
  3. Select Arduino Mega 2560 as board
  4. Select Arduino as ISP as programmer.
  5. Burn Bootloader.

And I did exactly that and then it says the bootloader has been burnt into the arduino mega. Then I found that the L led blinks in an interval of less than a second. I already had a feeling that something didn't go well. When I plug my Mega to the computer and try uploading a sketch, turns out, it still didn't work.

Anyone got any idea what's happening? Thank you in advance if anyone is reading this.

2

Did you change the driver? Or did you mean “firmware” instead of “driver”?

If so, which firmware did you upload to the ‘16U2? IIRC, it should be this one: ArduinoCore-avr/firmwares/atmegaxxu2/Arduino-COMBINED-dfu-usbserial-atmega16u2-Mega2560-Rev3.hex at master · arduino/ArduinoCore-avr · GitHub

This is normal behavior for a fresh bootloader, when you burn the bootloader, it also replaces the main sketch with a blink sketch.

What error messages are you getting?

3

First I updated the firmware from device manager manually, file location was pointed to Atmel/Atmel Drivers, then it became Atmega16U2,
Appears under a hierarchy named Atmel Driver in the device manager.
Then I used Atmel Flip to upload the Arduino Mega2560 firmware. The Arduino Mega hex file was from Arduino folder itself, named "Arduino-usbserial-atmega16u2-Mega2560-Rev3.hex" under
Arduino/avr/firmwares/atmegaxxu2/arduino-serial.

When I upload a sketch (after burning bootloader), the "Uploading" progress bar took a very long time. An error then shows up, it just says "An error occured while uploading sketch", it doesn't show any details.