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[Q] Xperia Ion Firmware Downgrade Help ?

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linux-howto

http://forum.xda-developers.com – Hello there im a newbie, i have one question...Im using Xperia Ion LT28h Stock 6.1.E.3.7 ( Unlocked BL, Rooted ) As im thinking to get back to rom 6.1.E.2.68, because latest rom from sony (.E.3.7 ) is totally sux, battery draining too fast... So now im still on .E.3.7, ive made soo many customization and i want to keep it after downgrading my firmware...Is it possible? So how am i gonna do it ?? Just download the stock rom .E.2.68 ?? Am i gonna loose all the customization that ive made on .E.3.7 ?? Let say i already make backup through CWM recovery, after i flashed .E.2.68, then rest (HowTos)