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| Thank you for the fast reaction.
I did a downgrade from 6.50 back to 6.40, that one succeeded.
The next step was from 6.40 back to 6.21, because the section overview is more nice in 6.21.
But now I have the problem with the NAV-900.
I tried different versions update and downgrade right now, but the NAV-900 doesn't react to any version.
The LED at the NAV-900 keep on flashing red and orange.
Other options? | |
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