Was genau willst Du denn installieren?
Das Update 2 enthält das Update 1:
https://cc.embarcadero.com/item/25623
[zitat]
This update is cumulative so it can be installed over the original shipping version of Borland Developer Studio 2006 or over Update 1. Please see the readme included in the .zip file for additional information.
[/zitat]
sicher, dass du nicht die Hotfixes (Hotfix Rollup) installierst?
https://cc.embarcadero.com/item/24132
denn die verlangen das Update 2:
[zitat]
This patch can be applied to all Turbo Editions. To apply this patch to
Borland Developer Studio 2006 Architect, Enterprise or Professional,
BDS 2006 Update 2 must already be installed.
[/zitat]