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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone 4 / iPhone 4S

iPhone 4 / iPhone 4S iPhone 4 / 4S

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Old 11-07-2010, 16:40   #1 (permalink)
Freak Poster
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Please Read if you are Downgrading from 4.1 to 4.01?

I have successfully upgraded my 3GS ios 4.01 to ios 4.1, whilst preserving the BB 5.13.04, from here:

100% solution to upgrade 3G 3GS 4G to 4.1 without upgrading the baseband (windows)

Everything went smoothly, if you correctly follow the instructions.

This process does involve a complete Restore so ensure you do a full back-up.

However, a BIG problem I noted was the battery consumption. A full battery, with no additional usuage went from 100% to zero within 3-4 hours. I guess this could be the incompatibility of the 4.1 operating system with the old 5.13.04 Baseband.

Due to this I will now be dowgrading back to 4.01 as I have SHSH saved.
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Old 11-07-2010, 16:58   #2 (permalink)
Freak Poster
Join Date: Jan 2006
Posts: 141
Member: 226154
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Thanks Meter: 13
Above title is supposed to read:

Please read if you are UPGRADING from 4.01 to 4.1 on 3GS, BB 5.13.04

Sorry for confusion.
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