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help on downgrading

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luenboy
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Default help on downgrading

Can anyone please help me on how to revert my se i9300 to stock 4.1.2?i got issues when i update to 4.3..it got lags and battery drains quickly.i think my unit came from a european country my build number is: I9300XXUGMK6..Can i flash a 4.1.2 philippine stock firmware without problems via odin?please help me on this matter..thanks in advance..
 
kunal1540
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Originally Posted by luenboy View Post
Can anyone please help me on how to revert my se i9300 to stock 4.1.2?i got issues when i update to 4.3..it got lags and battery drains quickly.i think my unit came from a european country my build number is: I9300XXUGMK6..Can i flash a 4.1.2 philippine stock firmware without problems via odin?please help me on this matter..thanks in advance..
First backup your efs and yes you can flash stock 4.1.2... but after flashing you won't have any network, then you should restore your efs.. And everything would be good to go.. Backup and Restoring can be done by Phils recovery or ktool from play store...

Sent from my GT-I9300 using xda app-developers app
 
luenboy
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Originally Posted by kunal1540 View Post
First backup your efs and yes you can flash stock 4.1.2... but after flashing you won't have any network, then you should restore your efs.. And everything would be good to go.. Backup and Restoring can be done by Phils recovery or ktool from play store...

Sent from my GT-I9300 using xda app-developers app
Are you saying that before i flash the ph firmware,i must root my phone?because ktool needs root permiission for it to work.i cant find phils recovery from playstore..
 
JJEgan
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This forum Original Development for Philz .

Please read the faqs and guides first .

UNDERSTAND FIRST
http://forum.xda-developers.com/show....php?t=2362743

Network IMEI EFS
http://forum.xda-developers.com/show....php?t=2393289

Downgrade and network problems .

http://forum.xda-developers.com/show....php?t=2531221
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