What are your ping responses? If it's not ttl=100 you won't be able to upload the firmware.
its not connecting to the deviceTry using the firmware restoration tool while the ping s ttl=100 if you aren't able to use flash -no header or the cfe mini web server.
is it fully bricked thenUse tftpd32.
I have 3 netgear r7000p with the last error line you have in your log.
Get a new router.
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