OK, I’ve therefore now tried Nano, but it failed. I followed the same procedure to add a bootloader with my UNO as I’d successfully used with my Nanos. Have you had success?
Some look-like boards are still being sold here in Brazil, but their processor is not the same as the Nano. They use an Attiny88, which requires adding Attiny core to the Arduino IDE.
The instructions that I´ve found are in Portuguese, so I suggest Googling something in english on how to do it