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#51
He has downgrade rights, and the Dell iso comes with a key for that purpose. If it is activated, that is what he is entitled to.
I don't think they do an Ult version of the Dell recovery media. If he wants to use Ultimte, he will have to :
1. get a product key
2. Either add the necesary drivers and updates to Ultimate install.wim, boot.wim, and winre.wim.
OR see if changing the Edition now on the installed Pro will work ( it should do , but will still need an Ult key ).
Here are the required updates and drivers:
Windows6.1-KB2990941-v3-x64. (for nvme)
Windows6.1-KB3087873-v2-x64. ( for nvme)
kb2732500-v2 ( system restore - probably optional)
iaStorAC.inf
iusb3hcs.inf ( DriverVer=09/25/2015,4.0.2.42 )
iusb3hub.inf
iusb3xhc.inf
nusb3hub.inf
nusb3xhc.inf