Flashing nano

Hi All!
I can't flash my Arduino nano board anymnore.
Can someone explain me what is going on?

Arduino:1.8.13 (Windows 8.1), Scheda:"Arduino Nano, ATmega328P"

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x03

avrdude: stk500_recv(): programmer is not responding

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x03

Errore durante la scrittura del bootloader

Questo report potrebbe essere piĆ¹ ricco di informazioni abilitando l'opzione
"Mostra un output dettagliato durante la compilazione"
in "File -> Impostazioni"

Have you tried choosing '328 old bootloader' in the tools - processor menu?

Yes I did.
It worked until yesterday.
It suddenly stopped working. Only the TX led is flashing during operation. I'm afraid it's broken ... :cry:

What was the last thing you did before it 'broke'? What do you have plugged into it?

It was plugged into a myfocuserpro2 PCB. Is it possible it depends on a short-circuit? I was doing some tests on it.
Is there a way to find out?

It could of been a short circuit! What do you CURRENTLY have plugged into it.

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