Installing Vista SP1 on Vaio TZ

Service Pack 1 on Windows Vista is incompatible with certain versions of some drivers; that’s the reason because SP1 does not appear on windows update.

The conflict is with Mobile Intel 954GM Express driver: the last version supplied by Sony is 7.14.10.1380, and the not compatible versions are in the range of 7.14.10.1322 and 7.14.10.1403 (both included).

I have readed some people was trying to install the standalone SP1, but that’s a dirty solution, and it causes conflicts within the system, so I recommend to don’t try that.

The solution for the SP1 is kinda simple (tricky but simple), and I found that by chance. We will reinstall the actual graphic driver on the system to force windows update to offer us an optional update with a newer version of the driver (in my case the 7.14.10.1437, of course compatible with SP1).

• First step: Updating graphic driver with the actual version on the system. 
  

  

  

  
• Second step: Reboot the system and try a windows update. This time it should offer us an optional update with the Intel 945GM Express driver: Install it.
• Third step: Reboot again, check the new driver version, and again, windows update. If all was ok we have now the option to install SP1.

I have to say that my Vaio model is the TZ32VN (Spain) with Vista Business. Perhaps that doesn’t work with other models. In that case, another option is to visit www.sony-drivers.com, and search for “7.14.10“, choosing the driver from another Vaio (not TZ necessarily) with a version major to 7.14.10.1403. That should work without problems, but I recommend to give a try  with the workaround of windows update first.