Hi Przemyslaw,

> Attached patch solved the problem for me  (by resetting the usb device before 
> firmware upload), modem starts up properly every time. I'm not sure what is 
> the real reason - is it endpoint 0 in the device really getting STALLed, or 
> is it some EHCI hcd/hub implementation weirdness. It's hard to say without 
> digging very deep into ehci implementation ;) 

resetting the device sounds like a good idea to me.  I will incorporate
something like this into future drivers versions.  Thanks for looking
into it!

All the best,

Duncan.


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