Can You Change Major Skills in Oblivion on Xbox 360?

No. In The Elder Scrolls IV: Oblivion on Xbox 360, your seven Major Skills are permanently locked in during character creation. There is no in-game mechanism to change them later.

Workarounds for a Suboptimal Build

• Level Minor Skills: You can still level any skill; they just don't contribute to leveling up. High minor skills remain effective.
• Perk Investment: Spend perk points (gained each level) to specialize in the skills you actually use.
• Magic as a Crutch: Spells (Alteration, Illusion, Conjuration, Destruction, Mysticism, Restoration) can compensate for low combat/stealth skills.
• Enchanting/Alchemy: Craft gear with Fortify Skill effects to boost relevant abilities temporarily.
• Roleplay the Flaws: Lean into the narrative—a mage who's terrible with a blade, a thief who can't pick locks. The game's openness supports diverse playstyles.

While frustrating, the fixed class system encourages replayability and distinct character identities.