Okay, managed to do some stuff.
If any of you need any questions, or even a guide regarding the new interface or system, feel free to ask me and I'll answer.
Now, for the job change quests.
First of all, there's a high probability that the level requirement for job changing is lowered. I managed to get the job change before even getting level 20. (From the quest content, it looks like it might be 17 or 18)
Second of all, the job change quest has completely changed. So Machine's guide right now is most likely outdated.
Right now, job change quests starts with a common quest, and after clearing that, the quest will be seperated into the two classes, then you complete that section to job change.
I have the new job change quest for Code Architecture, just to provide as an example.
Im gonna use this picture as reference since I dont know how the hell do you call each map.
Job change
Eve's "Another Code" Quest (You start with this and its common for both classes of choice):
1- Clear Map 5 twice at any difficulty
2- Clear Map 1 on the very hard (***) difficulty, and kill the giant red magician.
3- Obtain B rank or higher in map 3 (I forgot which difficulty, Im pretty sure its hard (**) )
4- Talk to the Alchemy NPC in town 2
Code Architecture quest (this is where it branches to two parts, then you choose one of them depending on who you want)
1- Get a random drop from the bats in map 2 (any difficulty)
2- Get a random drop from map 4 (any difficulty, but highest one recommended)
3- Get a random drop from map 6 in hard (**) difficulty
4- Complete map 6 in very hard (***) in 15 minutes or lower
That's what I noticed so far, if the job change quest turned out different for your class as well, try to screen it and I might be able to translate it.