No idea why they keep doing that.
They made it random in v11, then made it zyad1234 in v16. now v18 it's random again.
I notice 1 of the changelog items is
Ability to pass BT’s MCT R.OAM.2 802.1ag CFM requirement
Anyone know what this is?
VMG1312-B10A has new firmware also, v12.
security fixes, randomised supervisor password, and same BT MCT thing as above