thanks for the reply.
I have already tried a factory reset but it did not solve.
I try now to flash, but with the original firmware or a custom version?

I thought the NAND flash contained everything, but 12 gb remaining are very few ...

animehq said
I think you have a 16 gb motherboard with a 32 gb cover contact your dealer...

thanks for the reply

how could I be sure of this?
opening the tablet?

animehq said
If you open the tablet you will lost the warranty and i not sur you could see any difference between 16 and 32 gb pcb...

ok thanks
if I try to flash I lose my warranty?
where can I find the original firmware?

thanks

animehq said
Not sur ask your dealer about that.

Need to know what is your original firmware to answer.

But at least you could backup your actual firmware and restore him later.

1)Juste flash cmw without touching at the rest of the partitions.

2) Backup your actual firmware to a sdcard

3) remove the sdcard and flash the firmware of your choice

4) if you want to restore your firmware reflash cmw and restore him

5) juste reflash stock recovery so nobody can tell the tablet was flashed to another firmware

 

thanks animehq 

for flash cmw  theres a guide/tutorial or a old thread?

thanks 

the cube support wrote:

We sent the cube u30gt2 32GB for you .

Please finish update firmware from http://www.51cube.com/ch/DownShow.asp?ID=150

Maybe some apps in it .
Please finish updated firmware to solve the problem .
For updated firmware guide ,please check the link about http://www.youtube**.com/watch?v=op2RxeBipw4
and http://www.cube-tablet.com/news/cube-tablet-pc-upgrade-tutorial/

I tried to update firmware 1.05

globula_neagra said
did you used the RESTORE option or UPGRADE ?

the first time I flashed, I used the stock rom 1. 05 and the upgrade button
Then I tried again and the second time I used the stock rom 1. 05 and the restore button
then I tried again using a custom rom and restore the button