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Paper Tape
Posts: 1
Registered: ‎01-22-2019
Location: GB
Views: 188
Message 1 of 2

X380 Yoga Thunderbolt Firmware Upgrade Fails with an Unhandled Exception (

I have tried to update the NVM firmware on the thunderbolt controller and it fails with an unhandled exception. This ony appears when you run the exe from the C:\Drivers folder. If run from the installer the window dissapears and no error message is shown.


I am using the latest (22 Nov 2018) Firmware (


from here:


Error is as follows:

Unhandled Exception: System.Windows.Markup.XamlParseException: 'The invocation of the constructor on type 'FwUpdateTool.MainWindow' that matches the specified binding constraints threw an exception.' Line number '3' and line position '9'. ---> System.IndexOutOfRangeException: Index was outside the bounds of the array.


Many thanks


Posts: 6,684
Registered: ‎09-03-2014
Location: SK
Views: 85
Message 2 of 2

Re: X380 Yoga Thunderbolt Firmware Upgrade Fails with an Unhandled Exception (

Hello Chris_OS,


Sorry for not responding sooner. Engineers have been able to recreate the issue and confirmed that the installer package is failing not the actual firmware binary, they are taking steps to have the issue corrected.


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