Default Installing Rom on Xtreamer Q

Hi,

I have Xtreamer Q with the original rom (4.2.2).
During my attempts to install new rom, i upgraded the CWM version to 6.
The problem is that now i cannot mount the external SDCard and even not the internal storage from the CWM recovery menu (The error message is "E: Can't mount /sdcard" or "E: Can't mount /emmc").
I've been trying to search for a fix with no success.
What can i do to fix the problem?
Do i have another way to flash the rom?

Many thanks,
Liran.