not sure
This guide should be easy to follow:
After doing this you should be able to install APKās with ADB.
When I type the commands should it display something?
The phone should say āFastboot modeā.
I meant when I type fastboot devices, fastboot flashing unlock. Does anything show up in the terminal or screen so I know itās working.
On the phone you should get a screen asking you if you want to unlock.
WARNING: This step erases your data.
Nothing happens when I fastboot flashing unlock.
When I typed fastboot devices one showed up. However when I typed fastboot flashing unlock nothing happened. The command is still running.
Maybe try starting over.
No luck unfortunately 
You bought the phone brand new? Maybe itās unlocked already.
Yeah I bought it brand new.
Are you using Windows?
If yes, which version of platform tools? Did you get it from the official source?
Did you check windows update ā Advanced Options ā Optional Updates for drivers?
Iām using the iso file you provided.
Then sorry, I have no clue.
Maybe itās an issue with the 4058e unit or software Iām on.
Possibly. OEM unlocking enabled? Shouldnāt be stopping at least an error message anyway
Also, try fastboot oem unlock
Show me the output of fastboot devices
No i would go back to windows
Fastboot devices
FIJVQSXXP7W49T6L fastboot
And fastboot oem unlock didnāt work either.
Interesting, I donāt know.
You can try on windows just make sure you have proper drivers installed.
