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DNA 250 2-Cell only works with 1.2 SP 5


epicycle

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Hello,

one of my dna 250/166/167 2-Cell doesn't work as soon as I install any firmware higher than sp5 (sp5.1, sp6).

As soon as the newer firmware is applied I get "check atomizer" when firing and the atomizer analyzer shows question marks for the ohm values.

When I rollback to SP5 everything works fine again.

Any ideas what the issue could be?

The chip i have no issues with has the following production history: Saturday, May 6, 2017, 12:41 PM

The one that seems to have issues with sp5.1/sp6 has the following production history: Wednesday, January 11, 2017, 1:41 PM

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