iOS Question [SOLVED] B4i IDE 4.40 does not connect to B4i-Bridge anymore

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[SOLVED]
---> I had to delete the old release-version on the device first !
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Hi all,
I'm using B4i Version 4.40 on Windows 7 and the remote compiler service.

Since today the B4I Ide does not connect anymore with the B4i-Bridge installed on the iPhone.

When I first started the B4i-Bridge I saw a message stating that the OS 11 is no more compatible with B4i-Bridge and that should be updated. But I've never updated the iPhone to OS 11 !!.

I wonder if the installation of the new B4i IDE (4.80) is mandatory. Should I update the B4i-Bridge App also ?

Which steps should be made in order to get it working again ? Everything has worked fine until dicember 2017.

[More Informations added]
What puzzles me, is that if I open the designer, the B4i-Bridge seems to work, and I see the layout on the device. But when I hit run on the Ide, in debug mode, nothing happens, the B4i-Bridge does not respond. The IP address shown for a while in the B4i-Bridge is correct, and it's also the same shown in the IDE.
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Any help is greatly appreciated !

Best regards,
Sergio