I have some good news: with the recenty work on many places, the Zen X-Fi2 should have gained a lot in stability, especially the crashes when playing should be gone. Someone with the SD version of the device contacted me and we may be able to handle them in the near future. Still no work done on the internal storage for NAND but since microSD is working, I consider this is already sufficient for now. I now the touchscreen driver sucks but didn't have time to improve it. However, with some work done for the Fuze+, a softlock mechanism with touchscreen disable (like on phones) should appear anytime soon, making the device finally really usable !!
Appart from this, radio is still not working, I have some gone but it's ugly, it cannot be pushed in this state. If you have any feedback or comments, do not hesitate to answer here or send me an email because the more you bother me, the more likely I will kill the bugs since I have many things to do and only finite time to do so.