which bootloader I use for an Arduino UNO

Bought it today, but cant do know! Need Arduino as ISP? or what I use to burn bootloader????? could you plz help me?

Why do you want to burn the bootloader?

Yo use the arduino, I need to burn bootloader.

If it's a real arduino Uno, or even one of the very cheap knock-offs, it should already have the bootloader installed on the chip.
Does the "L" led flash ~3 times quickly when you hit the reset button?

Westfw if do a “L”, means that has already the bootloader?

westfw:
If it's a real arduino Uno, or even one of the very cheap knock-offs, it should already have the bootloader installed on the chip.
Does the "L" led flash ~3 times quickly when you hit the reset button?

Doesnt have yet the bootloader, cant upload examples from the software "Arduino"

rairame:
Westfw if do a “L”, means that has already the bootloader?

If the LED blinks after you reset the board, it does mean that the bootloader is already installed.

rairame:
Doesnt have yet the bootloader, cant upload examples from the software “Arduino”

There are many possible reasons for an upload to fail.

Please do this:

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