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I need help mc8775

I ask me to forgive for that that I write at you at a forum, I am simple any more I do not know where to me to search for the decision of the problem.
I have a module sierra mc8775 which normally worked. But after I have updated its insertion on the version it began to be restarted each 2-3 seconds.
In system it sees, but to be connected to com to port does not give.
It is repeatedly stitched normally. As far as I understand at it
Data in NVRAM is damaged. Who can that faced with similar and can help to restore to me the data in NVRAM.
Technical support sierra refuses to help as at me modem OEM version HP HS2300. Very much I hope for your help if it is possible. If you also do not give the help
That I ask me to excuse for troubling