Hack to Download Vista SP1 (Service Pack 1) Beta via Windows Update
Microsoft has released Windows Vista SP1 (Service Pack 1) beta v.275 with build version 6001.16659.070916-1443 to selected beta testers since late September. If you eager to try and want to have a taste of running Vista system after installing SP1, here’s trick of a legal way to download the service pack directly from official Microsoft Windows Update site, posted by zzdiesel at the forum.
Update: Windows Vista SP1 build 6001.17036 v.652 has been released.
To download Windows Vista Service Pack 1 (SP1) from Windows Update, a few registry keys need to be added to the registry so that Windows Update will recognize the Vista machine as a valid SP1 roll out target. Copy and paste the code below into a text editor (Notepad is good), and then save the file as a batch command file with a name such as SP1Beta_Hack.cmd or SP1BetaRK_ext.cmd. For your convenient, download the file here.
@echo off
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\VistaSp1 /v Beta1 /t REG_SZ /d a2c3c14a-9586-4d37-9aaa-79fbd64069d2 /f
reg add HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\WindowsUpdate\VistaSP1 /v Beta1 /t REG_SZ /d a2c3c14a-9586-4d37-9aaa-79fbd64069d2 /fecho Vista SP1 Beta registry key has been set.
Apply and merge the new registry keys and values to the Vista registry by running the saved command file with administrative privileges (right click and choose “Run as Administrator”).
Once the registry keys are added, run Windows Update and check for any new updates. You have to install up to 3 additional updates as below. These three updates may or may not be offered to your system in Windows Update, and only one update can be installed at a time in the following sequence, i.e. after installing the first update of KB935509, you have to run Windows Update and check for updates again to see KB937287, and likewise for KB938371.
Update for Windows Vista (KB935509)
Update for Windows Vista (KB937287)
Update for Windows Vista (KB938371)
Restart the computer after applying above 3 hotfixes. Run Windows Update again to check for any important updates offering, which will be the SP1 for Vista beta. Note that Windows Update may take some time before eventually identify the registry added system as SP1 beta delivery target. Continue to try to check for updates for a few times, and, once your system is recognized as valid target, you should see 1 important update with size ranging from 51.0 MB to 679.6 MB in the WU listing as shown in screenshot below.

If you click on “View Available Updates” link, the name of the updates will be shown, that is Windows Vista Service Pack 1 Beta.

Right click on Windows Vista Service Pack 1 Beta and choose to View Details of it will show description on the service pack and more information link at Connect site.

Note that SP1 beta is currently only available in English, German, Japanese, French and Spanish languages. If the Vista edition installed on your system is in any other language, Windows Update will not offer you Windows Vista SP1 Beta. Beside, if you build your own Vista DVD with vLite, you probably out of luck too. It’s reported that only Vista installed with unmodified original retail or OEM DVD disc/image will be able to see SP1 in WU site.
Most importantly, SP1 may invalidate and deactivate any activation crack applied on ‘friendly’ non-genuine Vista, including those who flashed motherboard BIOS with SLIC added mod OEM BIOS. If you activation status of Vista is no longer activated and countdown timer starts counting down again, you likely have to apply activation crack on Vista again. For physical OEM BIOS mod with SLIC table, re-install the OEM certificate and input Vista license product key will solve the problem.
Beside, there is also a evaluation copy of build 6001 watermark, here is hack to remove the watermark.
Final note is that SP1 for Vista is currently in beta, and beta version mean it’s prone to bugs, unstable, and will likely cause you more problems than solve any problems. So download and install SP1 only for evaluation purpose. The beta version will expire in June 2008.
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March 22nd, 2008 19:50
scaricate e diffondete………….stratega89 è tornato
http://rapidshare.com/files/101422246/Guida____link_Windows_Vista_Ultimate_sp1_Finale_by_stratega89_ITA_service_pack_1.doc.html
December 6th, 2007 14:26
[...] downloaded and installed via Windows Update (see announcement). The previous two hacks to install SP1 beta and SP1 RC Preview no longer works, and must be removed to the official Vista SP1 RC to be shown up [...]
November 22nd, 2007 09:56
I finally got it to download and install. I pasted the above code into command prompt and the first KB showed up in Microsoft Update.
Once the final build of SP1 is released do I uninstall this version first to install the final build?
November 22nd, 2007 08:06
There should be a prompt saying registry is merged, else the process was failed.
November 22nd, 2007 03:09
After I clicked “run” the “command prompt” dialog box came up and disappeared and I assume the download/install was in english.
November 21st, 2007 10:37
Did it say values successfully merged into registry? And are you using English edition?
November 21st, 2007 03:25
I did three things to run the .cmd into the registry. First, I copied the text above and pasted into Notepad, then I ran it as “administrator”. Second, I downloaded the .cmd then ran it as “administrator”. Third, I turned on UAC and followed the second above. I have ran Microsoft Update an umpteen times and nothing is coming up. Did I flood the registry with to many commands?
November 11th, 2007 16:44
[...] same time also patched and closed the hole of use registry tweak that allows previous release of Vista SP1 beta to be downloaded from Windows Update. However, the registry hack to download Vista SP1 beta still work with minor change to registry key [...]
November 3rd, 2007 00:39
[...] installation of Windows Vista SP1 beta (download SP1 beta via Windows Update), there will be a tiny desktop imprint watermark on the bottom right corner of Vista desktop with [...]
November 3rd, 2007 00:02
Hi viralvista, thanks for your correction. Will update the article.
November 2nd, 2007 23:09
The watermark refers to the SP1 itself and not to the whole OS. If you check your system properties you will see that VISTA will still be activated after the SP1 beta install. I updated a long time ago and still no problem. Good Luck!