Just a fan theory could the Omnitrix be a Galvanic Mechamorph / Upgrade modified?
In theory yes, but I think Azmuth would put safeguards into it to protect it from technical logical base life forms especially after the whole incident involving Malware and the form of Feedback.
It’s possible that the Omnitrix is made out of Nanites just like Upgrade/Mechamorphs
Nope, omnitrix can't be upgraded by mechamorps.
What do you think?