hihi if it is RETCN, then OTA won't work i believe, you are experiencing same as my set.
Actually it will show RETEU if u don't connect to internet (don't insert sim and put setup offline at the Wifi page) when setting up. Once u connect to wifi, it will go back to RETCN. I believe they deliberately do it this way, don't know how the XDA people manage to do it, maybe different phone different behaviour.
yea i used "fastboot oem config carrier reteu" to relock and didn't brick, but the OEM unlocking will be greyed out.
I read will become selectable again within 7 days but let me come back to u 6 days later. Don't try anything first, otherwise it's painful to keep reconfiguring the phone.
Not sure if the command will erase everything or not tbh.
Didn't brick i believe cos i didn't install magisk, didn't root.
i think the steps are almost the same as what u posted just that i never root. The is the "update" part from your xda link also. Here's what i did but i suggest not to try cos cannot get OTA, although can get singpass and banking apps working.
1. unlock bootloader - developer options - enable allow oem unlocking and usb debugging
2. download platform tools for adb, fastboot, etc
3. install motorola usb driver, not sure if this is necessary -
https://en-us.support.motorola.com/app/usb-drivers
4. get unlock code from motorola -
https://en-us.support.motorola.com/app/standalone/bootloader/unlock-your-device-b
5. Download the latest Firmware from
lolinet
6. Extract it, open servicefile.xml and copy the contents
into this website (
https://kfhost.net/flashfile)
7 Reboot your phone into fastboot (adb reboot fastboot or press and hold Power + Volume Down)
8. Open a CMD window in the extracted folder, paste the commands from the website and hit enter
9. fastboot oem config carrier reteu (won't work as discussed above)
10. fastboot oem lock