Here is the github repo with 2 files: one for the Omega2 and one for the Omega2+
Choose your version, download and flash.
BEWARE, however, that I may not be able to help you get back to default firmware if something goes wrong with the flash but I have helped someone recover their Omega2+ from constant reboot due to a bad firmware from Onion.
If we get to that point, let me know and we can help you with a dock and USB if you have them. If not, you may have to use a TTL2USB adapter and go serially. This would be NO different if you flashed a bad firmware from Onion so while I give you the BEWARE it's something you may have to do eventually, lol..
Here is the option I enabled from default firmware: