This hopefully helps if anybody has the same problem than me.
The problem was, that I could not use my original MKII under WIN7 64
bit.
The firmware upgrade worked, but for flashing I always got this
errormessages
1 | Unable to connect to tool AVRISP mkII
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2 | Timestamp: 2012-01-03 23:10:27.138
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3 | Severity: ERROR
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4 | ComponentId: 20000
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5 | StatusCode: 0
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6 | Unable to connect to tool context: 'Atmel.VsIde.AvrStudio.Services.TargetService.TCF.Internal.Services.Remote.ToolProxy+ToolContext'.
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7 |
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8 | Failed to get interface clock value
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9 | Timestamp: 2012-01-03 23:12:00.376
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10 | Severity: ERROR
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11 | ComponentId: 20000
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12 | StatusCode: 0
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13 | Unable to connect to tool context: 'Atmel.VsIde.AvrStudio.Services.TargetService.TCF.Internal.Services.Remote.ToolProxy+ToolContext'.
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I used AVR Studio 5.0.1163 (update check mentioned no updates availible)
Therefore I contacted the Atmel support and they proposed following
solution
1 | We recommend to install the latest version of AVR Studio5.1 available in the link below which has updated solutions for known issues and tools compatibility issues.
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2 | http://www.atmel.com/dyn/products/tools_card.asp?category_id=163&family_id=607&subfamily_id=1965&tool_id=17433
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3 | Note that the AVR Studio 5.1 BETA can co-exist with your 5.0 installation.
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With this BETA version everything works fine now (at least for me ;-)