Apparently the usb port I was using was not able to provide enough current for both arduinos, I changed the usb port and everything worked fine! I was finally able to install optiboot 8. Thanks for your help!
Apparently the usb port I was using was not able to provide enough current for both arduinos, I changed the usb port and everything worked fine! I was finally able to install optiboot 8. Thanks for your help!