Bootloader burning error

HI, I hope somebody can help:

I have some chinese Nano-Boards, with broken Bootloader. I managed to burn new boatloder on them ( with another Nano as ISP , the IDE says the bootloader was succesfully uploaded, but when i test the boards, -NO bootloader ! ( not flashing Led after reset, can´t upload anything ) Ideas ? By the way ,with the 10yn capacitor doesn´t work at all, without it works ( or not.. :wink: )

Hi,
I've some cheap clones with broken bootloader, too. I've used "Arduino as ISP" to burn new bootloader to the Nanos. Have you tried MiniCore or Optiboot?

Best