It is nuts to have a dev board that is constrained as the final device. You should have had an additional serial port and 8x as much flash, it would have solved your problem immediately.
It is even better to do the bulk of the dev inside of an emulator if you can swing it. The GPS and GPRS could be tethered into the emulator instead of trying to get a debug link into the system board.
It is even better to do the bulk of the dev inside of an emulator if you can swing it. The GPS and GPRS could be tethered into the emulator instead of trying to get a debug link into the system board.