Arduino Install Bootloader on UNO, MEGA, NANO

This video explains how to install BOOTLOADER onto UNO,MEGA & NANO boards
A working UNO board is used as MASTER & bootloader is installed onto target boards using ISP

For MEGA skip to 3:50
For NANO skip to 6:25

[hrudayesh_b_y]

Sir I have tried this method.It shows invalid signature(using two UNO).
How to solve this?

[ravikiranmunganda]

Dear sir, i am getting error stating ERROR WHILE BURNING BOOTLOADER, i connected as you connected arduino uno master(atmega328P U) and slave(atmega328P U), what to do sir, please help me

[ravichandransrinivasan]

Very good, informative video. Thanks. Please add another section to add bootloader direct to bare atmel chip with its own internal clock.

[hsde..]

Sir I had an Arduino Mega board and I want to bootload the ATmega328chip(Don't have an Arduino Uno board) in a bread board will it work for same setting after changing the pin configuration?

[ingalfredocmilano]

MICROPROCESSOR ATMEGA 328P IS DE SAME TO ATMEGA 328IC? .Thank you

[PiTon]

If you choose "Arduino Uno" as target board and burn it on a Nano then the PC sees it as a Uno and has 2k of memory more avalable (Uno uses the OptiBoot bootloader for faster upload) 😀

[mahadevappabadiger]

My arduino uno showed message as stk:500 . How to solve this error

[pearinnovation]

Sir i tried to burn bootloader in atmega2560 in standalone pcb using arduino uno it got burned and when i tried to upload program first time it got uploaded but second time it dont get uploaded n it gives msg as timeout i tried to upload program using arduino uno removing atmega328 and using rx tx pins n reset

[kavtech_midi]

please help, how to lock bit arduino mega?

[joshuastanley]

Very useful information sir. Lot of people are missing this information how to reload bootloader. Much appreciated

[MarcRidders]

Thank you for this video. I'd bought some (cheap) Nano's that had no bootloader. Using your guide I was able to flash the bootloader to the Nano's and now they work perfectly with the Arduino IDE.

[DrakerDG]

I am very grateful. Thanks to your video, I managed to recover my arduino nano 🤓👍🏼👍🏼

[АлександрБолбат-ыу]

Thank you! You are the best! I thought I bought a defective Mega, but your tutorial brought it to live.

[eco-racers]

Thank you very much! I have been looking for this, as I have a flaky 328p bootloader

[THENEXTLEVELLEARNER]

getting below error, , at the time of

Arduino: 1.8.9 (Windows 7), Board: "Arduino Uno"
avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.
Error while burning bootloader.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

[robertomesnik]

This also helped me to get my Elegoo rebooted!!! THANK YOU!!

[bradbergman]

Thank you, Saravanan! With just 1 video you turned on 10 lightbulbs for me. I used the procedures you show to burn a bootloader to a Mega 2560 Pro that I thought was defective from the factory. It's one of the low-cost mini boards coming out of China/India with the CH304 chip and zero documentation. These boards do not appear on the list of boards in the IDE but I selected Mega2560 and burned the bootloader anyway. It uploaded all the bytes and read them back to confirm but finished with an error as follows:


avrdude: AVR device initialized and ready to accept instructions

Reading | | 100% 0.02s

avrdude: Device signature = (retrying)

Reading | | 100% 0.02s

avrdude: Device signature = (retrying)

Error while burning bootloader.
Reading | | 100% 0.02s

avrdude: Device signature =
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.


avrdude done. Thank you.


I was not optimistic at that point but I went ahead and uploaded the blinky sketch anyway and it works!!


The cpu on my genuine Arduino Mega 2560 is stenciled Atmega 2560 16U-TH which matches the cpu on the Mega Pro. I think that allows it to work despite the error message from AVRdude. And I think if I can update the IDE's list of boards the invalid device signature error will go away.
Hope my observations help others.

[deepaknayak]

I AM GETTING ERROR AS avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.
error while burning bootloader. PLEASE HELP

[subramanyamn]

Hello, I tried the exact method to burn bootloader onto Arduino Mega 2560. I'm getting device signature mismatch errors. I've checked the internet for solutions, and I've checked all connections and power supply. No avail. Can you please help?

[richardboucher]

merci Je vais remettre mes nano en service