I got asked to login to reply about this, I'm no longer part of OG minus supporting the new owner with issues as found. (hence mod)
The device powers but it appears to be a factory floor model meaning it doesn't have a nand or Sony bricked it. It now belongs to a non-profit based in Norwich UK I co-own. (was donated when I left so it wasn't lost/sold and won't be sold due to UK CIC asset lock law.)
Alex/Pixel tried his best to do more, but minus getting it to boot it only has a test menu loaded. It maybe possible to flash a nand to it but for the sake of history we left it as it was in the end.
At some stage in future we'll try to do an in-depth video but with it being basically a test menu it'd be pretty boring.
The video you shared is very cool, if you ever wish to part / sell the device or donate we'd surely be interested to complete the set. We only have a retail Xperia Play 1 no proto.