I just joined the forum, this is my first post here.
I have a strong feeling that eTRAYz is now a discontinued product. Xtreamer is not selling eTRAYz on their online shop anymore, and the firmware updates have stopped.
This way I started looking for some alternatives to replace the original OS of my eTRAYz, and searching for this subject on Google I stumbled upon this topic.
Instead of cross flashing a firmware from other vendors into eTRAYz (which is against the forum rules, per what I understand), I believe that a better alternative would be replacing the eTRAYz software by some open source NAS distribution (such as FreeNAS or OpenMediaVault).
My knowledge about eTRAYz is somewhat limited, but I do understand that there is some sort of firmware on flash memory that allows the eTRAYz installer (running on Windows) to push the full OS to eTRAYz hard disk. I would think that it runs some sort of TFTP server from this firmware, but I am not sure.
BTW, the eTRAYz software was not developed by Xtreamer, but it was outsourced to another Korean company called "Gluesys" (there are lots of references to GlueSys on eTRAYz scripts, and GlueSys also has a home NAS device called "MCube) that seems to be very similar to eTRAYz: http://www.gluesys.com/eng/product/pro03.htm
(BTW, Google Chrome just complained that GlueSys website might be infected by some malware...).
My knowledge about Linux development is very limited (almost null), but I would be VERY interested in case anyone is able to run OpenMediaVault on eTRAYz, for example.
I have already bookmarked this topic, and hopefully in the future it will be possible to replace the original eTRAYz OS by some open source distribution...