Joying / HuiFei rk3188 QuadCore 9813H, more RAM ?

i search for more APP Memory on the HuiFei 9813H as 1GB

1GB is verry low.....

can a update format the Memory so that it can be 3GB RAM and not so mutch NAND ? 16GB can 10GB
for save have i 2 SD Card Slots ... its mutch...

sorry bad english. i am german.

other devices it goes. MIC AV7