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Please read this if you considering unlocking the boot loader or rooting your phone.

Important information

Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. You should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved.

For more information go here http://unlockbootloader.sonymobile.com/

Please also note

The Sony Xperia support team will not be able provide any support, related to unlocking the boot loader or rooting your phone.

We also recommend you to read the below blogposts.

http://developer.sonymobile.com/wp/2011/03/29/unlocking-the-boot-loader-in-the-new-xperia%e2%84%a2-smartphones/

http://developer.sonymobile.com/wp/2011/04/14/option-to-unlock-the-boot-loader-now-available-for-advanced-developers/

http://developer.sonymobile.com/wp/2011/09/28/sony-ericsson-supports-independent-developers/

Best regards
Sony Xperia support team

{GUIDE} How to Install Jelly Bean , ICS ( Ice Cream Sandwich) and Gingerbread on Xperia™ Smartphones, as well as root them

One time poster
Message 841 of 1,189
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Message 841 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

hey, my sony xperia arc only keep showing sony logo after root using flashtool. plllsss help me

One time poster
Message 842 of 1,189
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Message 842 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

Hyy,Nabeel bro,,,can u please upload indian version rom of 4.1.B.0.587(MT11i),,,,,thnksssss

One time poster
Message 843 of 1,189
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Message 843 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

I also want indian version for ST18i rayScreenshot_2012-10-04-08-38-20[1].pngScreenshot_2012-10-04-08-39-16[2].png

Highlighted
Adept
Message 844 of 1,189
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Message 844 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

thanks Nabeel for the How to

i succeeded to upgrade my xperia mini to ICS and now i enjoy it

Forum Legend
Message 845 of 1,189
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Message 845 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

amarinjo , yes it will delete all data so backup before proceeding

fadijabroun by tomorrow or day after tomorrow

musiqlover99 what steps are you following ?

DevGourav oops, i don't have indian rom for neo v

andspidy sorry , same as above. andspidy and DevGourav try searching at XDA

rhayy great man, all the best Slightly smiling Face

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One time poster
Message 846 of 1,189
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Message 846 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

Thanks Nabeel

As mentioned  above I did the procedure,It work fine for me I downgraded. I found that my ray was fast with gingerbread rom.

I do not need to unlock bootloader as it was OEM unlocked. I would like to install custom rom from XDA. should i take back up of origional kernel? if yes how?

and if i install custom rom and reverted it back to 2.3.4 or ICS with its origional kernel, is it possible still i can use pc companion to update it?

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Message 847 of 1,189
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Message 847 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

Thanks Nabeel

I need the Middle East Rom for Xperia U (st25i) any version of it. I just want the Arabic Original back.

One time poster
Message 848 of 1,189
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Message 848 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

thnkssss,,anywayy,,,

Visitor
Message 849 of 1,189
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Message 849 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

Hi Nabeel,

I just want to confirm if I should root my Xperia Mini pro SK17i first before downgrading it from ICS .587 to Gingerbread via flashtool? and is your GB firmwares generic? Can I use it regardless of the SI number I have?

Thanks!

One time poster
Message 850 of 1,189
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Message 850 of 1,189

Re: {GUIDE} How to Install ICS ( Ice Cream Sandwich) on Xperia™ Smartphones, Root and Downgrade to Gingerbread

Still wating for the ics rom for my xperia u st25 !! 4 days passed and i had nothing like you promize Mr nabeel Slightly frowning Face