You've really expected that a Chinese manufacturer/seller grants help? You are very blue eyeish.
Once they have got their money, you are no longer in demand as a customer, this because it would cost them money. That's the reason why most people only buy (directly off Alibaba, etc) a very cheap unit from Chinese manufacturers/sellers - hoping it will work for 2-3 years - and then, if it stops working, put it into e-Waste.
And, today buying a Windows CE based device, is absolutely aside the track. Windows CE is a dead OS. The Chinese have to pay a license fee $5 USD for each device, they install Windows CE on. Android's source code is available for free, thus each IT student can compile his own suitable Android version. That's the reason why since about last two years (most, if not all) Chinese manufacturers mainly produce Android based units. Best is, if you know how to unlock Android's bootloader, you at any time can install your custom version of Android.
Anyways, I hope you have success in finding the original stock "firmware", suspect you mean Windows CE?
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