Nope. You have to downgrade to 4.3 then root. By then once your rooted, your on MK2 and must read through the threads on accepting the update or different methods to flashing a ROM.
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Yep I just got the answer from the Best Buy Sawgrass location in Ft. Lauderdale, FL. This is real deal:
I called best buy and the rep stated this: I have to pre-order $50 now to reserve the phone and when I pick it up, all the promotions will ap...
OK use Odin 3 v1.85 and put the AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar in the pda slot. Do yourselve a favor and delete the ALL_ATT_I337UCUFNB1_I337ATTFNB1_505595_REV06_user_low_ship_MULTI_CERT.tar.
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Once you've accomplish S-Off and flash ROMs, your next goal is to unroot when its time for repairs.
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