Bricked Mate 10 Pro Emui 9.1

[nomone]

Hi everyone
i have a mate 10 pro BLA-L09C55 that boots only in eRecovery or in fastboot. I bricked it because I tried to install an Emui 10 version for BLA-AL00 and like a dumbass I installed just preload version.
Bootloader says the last version correctly runned was Emui 9.1.0.347C55, but if I try another command that I don't remember it returns another version (9.0.0.159C55).

Now I would like to know if I buy credits and use DC-Phoenix software will I unbrick my device?

Thanks

[nomone]

I have this doubt because i've seen that for my model number there is just one firmware of Emui 8 and I don't know if downgrade is possible

[gsmgeo]

Hello
plz info now what about build numbebr via fastboot mode