April 2014 is not all that old when one considers I still run Nemesis on a DM800HD SE clone but can understand why you would want to load the Hades image.
The Ali Seller site isn't very helpful at all in identifying which box they sell. X Team doesn't bring up very much that is definitive either but I think it's pretty unlikely to be a Sunray.
I guess it's a case of either looking for a label and posting the information or opening it up and seeing which SIM Card is installed. Sadly that will only be useful if the manufacturer has even bothered to print any details on it or even on the SIM. I know the SIM in my DM is plain white with no clue as to what it is but I do know it is SIM2 from other sources.
I have in the past however been able to flash SIM 2 images and Ferrari images to my DM without issue but flashing a Sunray image never worked for me on it. Luckily when I screwed mine up doing stuff like this it was easy to recover via a small button on the back. So no big hassle with cross over cables, finding the right image, the right update program and the like.
From reading the manufacturers web site all the bits and information to recover is there. So if you tried and it didn't work you could always recover the box back. As for bricking the box completely, I think the risk of doing that would only arise from trying use an unpatched kosher image.
If it were me I'd just flash the fecker & worry about the consequences later but this is not a recommendation from me for you to be as gung ho as the crazy donki is.
Whatever you decide to do or try, now & in future, always backup your existing image first before giving anything like this a go. All being well you can always flash back afterwards.