How do I restore original firmware of Arduino Uno R3 (ATmega328P)? I entered into DFU mode by flashing two pins .Now when I connect Arduino to PC through USB, it is not being detected and not being shown in Arduino IDE.I guess the PC is not detecting it as a board. Please help me is making my Arduino normal.l am a beginner and I need to submit my project in few days!!!Please help me.
What is "original software"? Do you mean restoring a bootloader?
For doing that you should first determine what is USB-UART hardware is installed on your board. If this is original Uno - it should contain Atmega16U2 chip. In this case I think that this tutorial could help Restoring bootloader in Atmega16u2 on Due
If you have a chinese Uno analog - it likely has a CH340 UART chip. In this case you should update bootloader as in the Nano board
It's original board.I will try it.Thank you.
- Why? What did you try?
- Did you disconnect them again? Did you burn a different firmware for the 16U2 (usually to make it a HID)?
The only thing that prevents the board from being detected is the firmware of the 16U2. The link in reply #3 might get you on the way. Alternatively, you can follow the instructions on whatever page you found to get it into DFU mode and use that apporach to burn the firmware. You can find the 16U2 firmware (windows system) in C:\Users\yourUsername\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.4\firmwares\atmegaxxu2 or C:\Program Files (x86)\Arduino\hardware\arduino\avr\firmwares\atmegaxxu2
@b707, I doubt that the CH340 (and bootloader) are relevant in this case; the CH340 does not have a firmware / DFU mode.
Consider buying another Arduino as you are out of time. Program that and submit your project. Then repair the broken one.
1 Like
I am working on a project where we will unlock PC using RFID module(scanning RFID card with RFID module) ,where there is no need of typing unlock password.
I joined those pins just for 2 secs and released them sir.I updated the driver port to some driver available in the file named "Unojoy...." smthng.....I hope you understood sir....??
I used flip software sir...Can I use it to make it normal ??
Please check the video sir.I did exactly as shown in video.Now I want to make my Arduino normal,so that I can upload new code.
Sorry that is 10 minutes then and there is also a language barrier so I will spend that time helping several others. You need to identify what pins we are talking about. You need to realize we cannot see what you have and what you did. More times then not people that try to duplicate a video have problems for many reasons.
It's an involved process and particular regarding the hardware version you have.
Look before you leap.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.