Generally i suggest you do not use bypass unless you understand what its bypassing and why. Its not a normal "feature" to just check. I know czary2mary understands this and thanks for working with me on testing this stuff czary2mary.
0.17.0 is on its way with the above capability. No need to use bypass. It will just advertise as an authorized cross flash on website.
As for UD02: It only works UD02 1.00 > UD04 1.14. Any crossflashes out side of that will not work and you need to reset to UD02 1.00 and redo the UD02 > UD04 flash. Ill try to harden this but I didn't expect most to do other flashes on top of UD04