Hi,
Right now, there is no firmware available for X5 and Osmo.
The X5 need another adaptor to be compatible with Osmo, please wait for our update about the adaptor.
You can not upgrade the X5 firmware on the osmo. You will need the inspire to do this. My friend owns an inspire and i was able to update my X5 firmware on that. Now i can use my X5 on my osmo =)