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[Q] AT&T MJB or Rogers MK5 for use in Germany (on i747 AT&T model)?

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cannondale0815
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(Last edited by cannondale0815; 22nd December 2013 at 01:32 PM.)
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Question [Q] AT&T MJB or Rogers MK5 for use in Germany (on i747 AT&T model)?

I bought an unlocked AT&T i747 in the U.S. and gave it to my sister in Germany, where she uses it on the O2 network. It's still on the 4.1.x AT&T stock ROM, and I want to upgrade it to 4.3, but have a few question for you S III experts:

1) Should I use the official AT&T MJB ROM, or one of the Rogers/Bell/Telus MK5 ROMs? (keep in mind that I need none of the carrier specific stuff, I just want the best 4.3 stock ROM for the i747)

2) It is unclear to me what difference the new 4.3 bootloader makes. Do I need o flash it, or am I better off leaving the bootloader unchanged? I understand one cannot go back once on the 4.3 bootloader, but I don't understand what advantages the new bootloader brings.

Any advice is greatly appreciated. I am still in Germany for a few days before returning to the U.S., and would love to perform the upgrade while I'm here.

Also, battery life is of utmost importance, so if upgrading to 4.3 is known to have any negative impact in this regard, please let me know.

Thanks!
-J
 
cannondale0815
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