I dumped all but 2 of the ROMs from Rolling Extreme over a year ago, maybe longer. The undumped ROMs are the SSOP70 graphics ROMs and they won't be different. The main program could be a different revision but the only ROM that will change is the TSOP40 flash ROM at IC38. Theres enough of it dumped to start the emulation. As you've noticed it's been dumped a year and still nothing so that suggests it's probably not easy or there's no interest in working on it right now.