Redmi note 9 pro help with fastboot

[Nemo1985]

Hello, I bought a redmi note 9 pro from ebay, one week ago, it was sold as refurbished with no use time (it was true according to the usage time).

Now i'm trying to boot the orangefox recovery but any command I give with fastboot I get this error:

FAILED (command write failed (Unknown error))
finished. total time: 5.013s

I was able to unlock the bootloader after waiting a week.

This is the output of devices:
???????????? fastboot
ef43e14 fastboot

What is wrong with it? I got a brick instead of a phone?

Thanks

 

[sir_bazz]

Are you trying to boot OF, or flash it, when getting that error?

 

[remoteser]

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[Nemo1985]

Thank you all. I resolved the issue using fastboot from another pc, probably the fastboot with many ????? was the issue