Switch Windows 7 Editions by modifing the ISO image

• Method 1: Delete ei.cfg using PowerISO or UltraISO or this tool
• Method 2: Modify ei.cfg
  
  • To select from the editions whilst installation:
    
    • Retail:
      

      [EditionID]
      Starter
      HomeBasic
      HomePremium
      Professional
      Ultimate
      [Channel]
      Retail
      [VL]
      5
      

    • OEM:
      

      [EditionID]
      Starter
      HomeBasic
      HomePremium
      Professional
      Ultimate
      [Channel]
      OEM
      [VL]
      5
      

  • To switch to ultimate edition:
    
    • Retail:
      

      [EditionID]
      Ultimate
      [Channel]
      Retail
      [VL]
      1
      

    • OEM:
      

      [EditionID]
      Ultimate
      [Channel]
      OEM
      [VL]
      1
      

• Method 3: Use Windows 7 ISO Image Edition Switcher