OEM unlock greyed out on factory unlocked Pixel 10 Pro XL

wallybo

Trying to install GOS on a new "Pixel 10 Pro XL Jade 256GB (Unlocked)"
purchased directly from google and the order confirmation states "Unlocked"

I enable developer mode but cannot enable oem-unlocking as it is greyed out.

The phone is connected to the internet.
I performed a factory reset per instructions in one post on this forum but still greyed out.

I have reviewed various posts on this forum but most involve previous models / builds and generally restate need to connect to internet. It seems that some people have succeeded in installing so I'll assume I have missed something.

I have installed GOS on a pixel 8 and a tablet in the (somewhat distant) past.

Can anyone help with this?

wallybo

OK That was weird.

While writing above post the phone went into a sleep mode. When I just went back to it (entering PIN) it returned to the developer setting screen I had been looking at but now the OEM unlocking was available! So I unlocked it successfully.

So either the factory reset did it plus waiting 10 minutes
.. or .. just perhaps it would have unlocked without factory reset by turning on internet and waiting 10 min
.. or .. posting on this forum has magical properties

go figure