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Is it possible to downgrade from jellybean back to ics

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Alex Slane
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Default Is it possible to downgrade from jellybean back to ics

Hi guys , need some information, I was just wondering is it possible that I could downgrade back to ics after putting jellybean on my phone?
Your help is appreciated.
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Chris.
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dmbardal
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(Last edited by dmbardal; 7th February 2013 at 06:09 PM.)
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Yes it is.
How did you upgrade?
If you upgraded via FlashTool you can just as easily downgrade using the same method, just by using an ICS .TFT instead of the JB one.

Any reason why you want to downgrade?
Make sure you do a complete wipe to make the ROM to be good and dandy, and the battery will get better after a few days.
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dzadzev
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Default Re: Is it possible to downgrade from jellybean back to ics

Sure you can, you just need to flash ics ROM with flashtool (you dont need to have unlocked bootloader)

But I dont see the reason to downgrade

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Alex Slane
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Default Re: Is it possible to downgrade from jellybean back to ics

Thanks for the replies, I want to go back to ICS due to the major battery drain that I am getting, I have read a few threads now on here and also esato and jellybean battery seems to be very hit and miss.
I live how fast the phone has become but can't live with a poor battery. Got any ideas before I go back to ICS?

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gregbradley
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Default Re: Is it possible to downgrade from jellybean back to ics

Yes wait a few days, the first few days I'd flashing a Rom are always battery heavy

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Alex Slane
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Originally Posted by gregbradley View Post
Yes wait a few days, the first few days I'd flashing a Rom are always battery heavy

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ok well , i have just read that formatting to extenal and internal memory helps , so i have just done that .
as you say its a big upgrade firmware wise so going to give it a couple of days and then look at what the diffrence is again .
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Alex Slane
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Default Re: Is it possible to downgrade from jellybean back to ics

Ok so reporting back on my T's jellybean upgrade, seems that it's starting to level out a lot now, as I said in my last post did the memory thing and formatted both And the phone has responded very very well.
Seems to get a whole days usage now and maybe a bit more. I always charge anyways over night so nothing to worry about. How's yours?

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profchaos1981
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i had the same dilema as you to downgrade to 4.0.4...
I noticed today that the phone drains 4 to 8 % battery in standby mode over the night.. i havent noticed something like this in 4.0.4 .
I think the battery management was better.

Anyway i will follow your suggestion to wait a few days to level the situation .

I updated with mac bridge . What is the best method if i decide to downgrade ?
I need a clean install method .Format everything and clean install the rom i decide to install.

Also does the repair option in pc companion or bridge does a clean install;
Thank you
 
gregbradley
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Quote:
Originally Posted by profchaos1981 View Post
i had the same dilema as you to downgrade to 4.0.4...
I noticed today that the phone drains 4 to 8 % battery in standby mode over the night.. i havent noticed something like this in 4.0.4 .
I think the battery management was better.

Anyway i will follow your suggestion to wait a few days to level the situation .

I updated with mac bridge . What is the best method if i decide to downgrade ?
I need a clean install method .Format everything and clean install the rom i decide to install.
Flash a stock ICS ftf in flashtool
Quote:
Also does the repair option in pc companion or bridge does a clean install;
Thank you
Yes.

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If I have seen further it is by standing on the shoulders of giants. Sir Isaac Newton

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[Xperia Z1]
You are free to share my work, but please provide the correct credits and a link to my original thread.


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profchaos1981
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thank you so much for your quick reply!

so if i got it right the repair option performs a clean install to the existing rom ..In my case it will reinstall JB 4.1.2

If i choose the flash tool i will choose the rom i want .. So do i get it right?
And if so where can i download the original 4.0.4 rom ? thank you again for your help!

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