Trying to do nand erase in serial terminal, but can't send any keystrokes?

Installing and Using OpenWrt
1

I am trying to do this. I am at this step:
nand erase.chip
I stopped the boot process, it is at ZHAL> but any keystrokes won't send nothing. I tried minicom, cutecom. What am I missing here? I mean I sent the asc file succesfully. My PL2303 can't be broken then? I did this one step before and it worked:
ascii-xfr -s -n -v u-boot.asc > /dev/ttyUSB0

See here, I am inputting nand erase.chip here, but it waits like this for 10 minutes. Nothing proceeds:

resim
resim681×715 46.6 KB

2

disconnect the three wires from the device, and short the Tx and Rx pins, can you see your own typing in the term app ?

3

I unplugged all cables from the device. Then shorted them like this with a screwdiver. I cant see my own typing

20231129_193509
20231129_1935091920×1440 125 KB

4

Them = Rx and Tx, I hope.

Then there's something wrong with the TTL, or the term app.

5

Yes they are RX and TX, but when I short them it says this on cutecom:
<break>
Does that mean my PL2303 is broken?