[Q] Merge Internal Storage Partitions?

I'm not certain that this is where this post should go, however it seemed the most fitting for it. My android tablet (Arnova 7b G3) has only 4GB of internal storage, of which 2GB is allocated as storage, and the other reserved for firmware, apps and system etc. This makes it awkward when installing games for example which have a download size of 1.39GB (GTA: Vice City) that must be downloaded to internal memory as it leaves very little spare. The tablet divides the space into the following: Internal storage, and internal SD card.

Is it possible to merge the two partitions, seeing as a lot of the first partition is given to apps anyway it wouldn't be as though there was no space for firmware?

Thanks!