You can try their official forum.Download links absolutely dead... anybody know where to get it?
Meanwhile, I flashed the latest version (4.3) on my TX3 mini 2021, but the wi-fi sadly doesn't work. Apparently this ROM isn't compatible with the sp6330-x wifi chip on the new TX3. So if you have a new TX3 like I do, don't use this ROM unless you're planning to run an ethernet cable. Wait for an update.