Thanks so much for this! Worked very easy on my unbranded HTC HD7.
Installed the WPUpdate tool
Extracted the CabSender files into a folder
Copied the 7740 update into the Cabsender folder
Launced the batch file
I hit 'S' and after a minute it was updated!
Small note: First I tried running the batch file in Administrator Mode, but it didn't work then (couldn't see the update cab) You should run the batch file not as administrator, then it works just fine
---------- Post added at 05:31 PM ---------- Previous post was at 05:09 PM ----------
Question: Can you install the language pack cab on a unbranded HTC HD7 (7740) with the cab sender tool without problems? Or is it not possible to install a language pack afterwards?