System Workbench for STM32

@ bing: Thank You for Your support.
I didn't understood the whole site location thing, but after looking at URL You gave me, I tried to update eclipse with

Name: System Workbench for STM32 - Bare Machine edition
Location: http://www.openstm32.org/Eclipse-updates/org.openstm32.system-workbench.beta

In this special case, I have a different error and it is the following:

An error occurred during the org.eclipse.equinox.internal.p2.engine.phases.CheckTrust phase.
session context was:(profile=epp.package.cpp, phase=org.eclipse.equinox.internal.p2.engine.phases.CheckTrust, operand=, action=).
Error reading signed content.
Exception in opening zip file: C:\eclipse\plugins\fr.ac6.mcu.debug_1.11.2.201612060912

After all, I didn't found a work around.

Giacomo