Upgrade Windows XP OEM to Windows 7 OEM

Discussion in 'Windows 7' started by wyatterp, Sep 25, 2014.

  1. wyatterp

    wyatterp MDL Novice

    Sep 25, 2014
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    Hi everyone,

    I've been doing a lot of reading for the last week on if what I'm proposing is possible and have made it to the point where I am very, very confused due to an overwhelming amount of info.

    My goal: I have an Acer netbook with Windows XP and want to install Windows 7 OEM. First, is this even possible? (I know - it's technically not a legal process). From what I have read it seems that it is when modifying the bios (updating to include SLIC 2.1), installing a new certificate and installing an oem key.

    From all of the reading I've done, here are the steps I've set for myself to successfully complete this with oem activation.

    1. Update BIOS to latest version 1.29 within Windows XP (bios from acer site)

    2. Backup original XP certificate and key as a backup plan (not sure how)

    3. Check that SLIC 2.1 is in the BIOS with SLIC Dump ToolKit

    4. Get Windows 7 Home Premium 32-bit iso and use UltraISO to modify sources\ei.cfg:

    [EditionID]
    HomePremium
    [Channel]
    OEM
    [VL]
    0

    5. Install Windows 7 Home Premium 32-bit

    6. Install the new certificate:

    Place the certificate file ACRSYSACRPRDCT.xrm-ms in C:\

    Run cmd as Administrator

    Type the following command:

    slmgr -ilc C:\ACRSYSACRPRDCT.xrm-ms

    Press ENTER and wait until a message confirms that the certificate has been correctly installed.

    7. Install the new key:

    Run cmd as Administrator

    Type the following command:

    slmgr -ipk (insert key from MDL thread here)

    Press ENTER and wait until a message confirms that the key has been correctly installed.


    Am I missing anything and with a long shot, will this work?

    Thank you for any advice you can provide. There is a WEALTH of information in this community.
     
  2. EFA11

    EFA11 Avatar Guru

    Oct 7, 2010
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    you could simply install Win7 and after install run windows loader http://forums.mydigitallife.net/threads/54168-Windows-Loader-Download Loader does the slic and cert input for you. All updates at Windows Update are fine, no need exclude anything. Loader changes no system files or "hacks" anything on the system.

    As far as legality goes, you paid for XP if you bought the system with xp. Win7 would need paid for to be "legal" of course.

    IMO, bios mod is the last option as loader is the safest.
     
  3. urie

    urie Moderator
    Staff Member

    May 21, 2007
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    Your XP installation will use SLP1.0 activation it activates using four oembios files that match manufacturer string in DMI area in bios + OEM:SLP key. You can use OEMBIOS-Backup Then read in XP section how to make oem:slp cd.

    As for windows 7 once you have flashed with latest bios and checked with SLIC Dump ToolKit to see if you have Slic 2.1 then yes your procedure is correct.

    As for editing the ei.cfg file personally I would remove it then you can install any version of windows 7 I would download Windows 7 ultimate sp1 with media refresh from Windows-7-w-o-SP1-and-SP1-Media-Refresh-Direct-Download-Links and since you are going to use UltraISO then I suggest you read Win 8.x • Win 7 • Vista - 'Multi-OEM' ISO Project ;) then it will pre-activate when installing. Or you could just use Daz loader to install OEM:SLP key and certificate loader would not be installed if you have SLIC 2.1 in bios.
     
  4. wyatterp

    wyatterp MDL Novice

    Sep 25, 2014
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    Thanks to both EFA11 and urie for your quick responses! I'm somewhat familiar with windows loader. Doesn't it basically trick the system on startup to thinking the correct certificate exists in the bios?
     
  5. urie

    urie Moderator
    Staff Member

    May 21, 2007
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    It loads SLIC 2.1 into memory before windows starts.