Sorry but as I recall their is no way to relock the bootloaderhey, it's me again!
I hope all is well.
I did a Swap with Visible.com for a new ZTE Blade A7 Prime for free. I have to send them the Ascend XT in Stock condition, but after flashing your B18+Stock+ROM and rebooting I still have that "Your device has been unlocked!!" warning message at start-up.
I followed your instructions exactly as you have them posted. Twice. I thought that getting the phone back to Stock B180 using your B180+Stock+ROM zip file would relock the bootloader.
During flashing there was a message in red that said," Unable to mount /data/media/TWRP/trwps"
I watched as it scrolled through what it was doing and at the end it said:
"Done!! Stock B180 is now installed!!
Thank you for your support!
Updating Partition details...
failed to mount ' data/ ' (invalid arguement)
...done"
I was then given the option to: Wipe dalvik/cache or to: Reboot System.
I tapped on Reboot System
Is there no way to re-lock the bootloader in order to return the phone to Stock so I can send my phone back and get credit for it to Visible.com? It is not rooted according to Root Checker so the only thing I need to do is re-lock the bootloader.
Thanks,
the known method was to flash a dload file downloaded from huawei
but the XT never got this file so your stuck...
you could search the forums and see if anyone ever successfully re-locked but I don't recall it ever happening