Hi Matthias,
The fisrt time I upgrade, it seemed like it was a Lan problem.
After the update, I could not communicate from my laptop with my 3ex using Lan cable. I tried through both vesrions of PLC 5.1.1.2 & 5.1.0.0 and in Internet explorer 8 by giving the ip. This was so strange that I even look at the leds in Lan exit for the first time: the green was flashing, the yellow was rock solid. So, I made a reset to factory settings, nothing changed. Then by using the USB cable (as I always do during FW updates) I downgrade and upgrade again.
This time I could connect through LAN cable with both versions of PLC but no web interface. I even check if the internal ip has changed for some reason, but of course it was the same.
Then I downgrade again and all working great.
I have a laptop dedicated to profilux with Internet Explorer 8 and since the begining I am only using this to communicate (and the dyndns when not at home).
I will give it a third shot tommorow morning and post here again.
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