I don't see the difference. 1) It worked just fine. 2) Update: it doesn't work anymore. 3) Update: it now works again. Maybe the specifications (known only

I don't see the difference. 1) It worked just fine. 2) Update: it doesn't work anymore. 3) Update: it now works again. Maybe the specifications (known only to Apple) changed, or they made use of some features in the specifications that were previously unused, that anyway (since working order was restored) don't seem like being of an "essential" nature.