After upgrading nerves_bootstrap 1.9.0, I can’t upload firmware to target any more for the error.

1. mix nerves.new app → make a new project
2. mix deps.get → The comments came out.

A new version of Nerves bootstrap is available(1.8.1 < 1.9.0), You can update by running

  mix local.nerves

3. after update the above, mix deps.get runs.

** (RuntimeError) :nerves_ssh isn't configured, but :nerves_firmware_ssh is.

This is probably not right. If you recently upgraded to :nerves_ssh or
a library that uses it like :nerves_pack, you'll need to edit your config.exs
and rename references to :nerves_firmware_ssh to :nerves_ssh.

4. modified nerves_firmware.ssh to nerves_ssh as the comments in config/target.exe

5. mix firmware and ./upload_sh execute

 $ ./upload.sh 
Path: ./_build/rpi3_dev/nerves/images/connect.fw
Product: connect 0.1.0
UUID: f524800a-2aa7-5f60-7bec-f3a86f32caa3
Platform: rpi3

Uploading to nerves.local...
subsystem request failed on channel 0

After all I can’t upload because of subsystem request failed

I check the previous project if I can upload or not with compiling processes. This case is all right.
.ssh/id_rsa.pub is the same.
And ssh nerves.local passes to make a remote terminal.
I upgrade fwup 1.8.0 -> 1.8.1 but this didn’t solve the issue.

I assume that ssh_subsystem_fwup which is deps of nerves_ssh has something wrong and I should set something on configuration.

Could you please tell me how to solve this?

Thanks.