JTAGICE mkII got wrong device id

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I was using avrstudio6.0+mkII(Ver7.19),the CPU is AT32UC3C2512C. They worked well.

Yesterday, I updated the avstudio to 6.1.2730(newest). The mkII updated from 7.19 to 7.24.

Now there is a major problem. The device id read by mkII is 0x4200003F which matched with AT32UC3C0512C. I can't go on with programming or debugging.

What's wrong with the mkII? Is this a bug of new firmware? I wish I can roll back to 7.19

Last Edited: Mon. Nov 18, 2013 - 08:51 PM
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uninstall the 6.1, reinstall 6.0, update 7.24 to 7.19.
Device id is ok. So there must be a bug of 7.24