Can't deploy on Sony's Spresense

Help
#1

I followed the tutorial of “Response to your voise” and I successfully finish to build the good impulse. However, when I tried to deploy the impluse to Spresense the following error was shown,

Not ACK, Not NAK
#Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
#Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
#Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
Not ACK, Not NAK
excessive protocol errors, transfer aborted

I made sure to stop the daemon.
I would be very grad if you give me some helps.
Thanks.

#2

Hi @KentaroMatsuura, you did manage to flash the initial binary from https://docs.edgeimpulse.com/docs/sony-spresense#3-update-the-bootloader-and-the-firmware I assume (as you’re talking about the daemon)?

#3

Suggestion from @Arjan is to lower the transfer rate to 115200 by flashing via:

python3 -u flash_writer.py -s -d -b 115200 -n edge_impulse_firmware.spk
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