You upgrade your job classes by equipping weapons and mastering different abilities. Once you have the required amount of A-abilities for a particular job you may upgrade to a more advanced job.
eg. To become a ninja you need two thief abilities. If you master all abilities in a job (not just A-Abilities), your character will have a gold star above their head in the job section of the menu.
You have to travel to the Citadel of trials to obtain the Rat's tail. Then you must travel to Dragon Cave and speak with Bahamut. He will grant you your class upgrade then. This requires the airship though.
Use a promotion item, (Hero Crest, Knight Crest, etc.,) on a unit that is level 10 or higher. It is recommended that a unit be upgraded at level 20, or they will lose stats.
For some of the main characters they promote at a certain point in the game.
From path of radiance and radiant dawn, most characters promote when they reach level 21
The change is not a level dependant event, you have to perform a certain quest. When you complete it, your party members upgrade.
You need to learn a couple(2) of soldier a-abilities before you can. Then you change the job through the normal job menu (it doesn't appear until at least one person has unlocked it). The requirements are the same for a Paladin so you can see if you like that or the Fighter. NB. Fighter is a human job, no-one else
you need to get the rats tail from the citadel as a test of your bravery and courage. After you get it go to bahamuts lair and he'll upgrade your classes. this is permanent and cannot be undone.
The motto of Foothill College is 'Upgrade. Advance.'.
Get them to level 20 and level them up.
GEARS University, Classes, Mecha Piloting 101
promote, raise, advance, upgrade, exalt, increase
You play as link and obtain the "Fantasy Suit" upgrade
the omega weapon ( the final upgrade for all of lightning's weapons )
Advance to the Imperial Age and upgrade them at your stables. They are available only to certain civilizations.
No, it is impossible to advance any technology without atoms, due to the fact that everything is comprised of atoms. You wouldn't be able to upgrade or do anything.
Upgrade implies that you have to have a copy of Vista home premium in order to install upgrade. Full version is comprehensive and does not require you to have any OS in advance.