Both platforms are MIPS Linux and they share a similar userland (OpenDingux), so in theory they could remain binary compatible. The GCW0's flavour of OpenDingux however evolved a lot in order to fully utilize the hardware. There is now hardware floating point calculation using the FPU chip, the libraries were updated to backwards incompatible versions, programs now use $HOME for save/data path, internal memory's filesystem was changed to EXT (chmods) and finally there is the OPK format support. All these changes make most of the Dingoo A320 binaries incompatible with GCW0, however there is a small chance that a program not using any of the mentioned features will work on GCW. This chance is very small however and it decreases with every new firmware update.