At the end of Endgame, Part 2, it shows Rex using his machines, so sure why not.
correct my if am wrong but I thought the omega 1 was 1 of the five meta nanites and the meta nanites were deactivated so would that not include the omega 1 it a bit since i last saw the show all the way through so i could be wrong
Nope, the omega-1 nanite isn't a meta-nanite. It's just a special nanite that Dr. Rylander gave Rex. That's all.
cool thanks for your help