Upgrading from Gingerbread to ICS with Mobile Odin

[yatyat]

Hi all,

I have a rooted S2 and am trying to upgrade from Gingerbread to ICS. I am a complete noob and only managed to root it with a step by step instruction that I found here and the stress probably took 2 years out of my life.

Anyway, I would like to update it to ICS via Kies but want to keep the root so I got mobile Odin thinking I would just turn on Everroot and then update via Kies but the Everroot option is not available to me. Would someone be so kind to give me some directions on how to do this?

Thanks!

 

[ironass]

Hello yatyat!

A little bit more information would be useful, such as the following:-

Go to Settings > About phone > Model number... and give the Model number of your phone and the Basband version.

Go to your dial pad and type in... *#1234# and post the 4 lines of details for your phone.

Last of all, which network are you on?

Personally, I would not use Mobile Odin for this big an update but, rather, the PC Odin as my method would involve a Factory Reset prior to flashing after first backing up nandroid, Titanium and efs.

 

[yatyat]

Thanks Ironass!

Model number - GT-I9100M
Baseband - I9100MUGKG2

PDA: I9100MUGKG2
PHONE: I9100MUGKG2
CSC: I9100MUGKG2
Build Info: Tue Jul 12 10:19:43 KST 2011

and I am on Bell in Canada.

 

[ironass]

OK... so you have an M variant phone with Bell branded, Gingerbread firmware.

You have 3 ways to update to ICS.

1. Flash a stock firmware, identical to the one you have but with an un-rooted kernel, using Odin and connect your phone to Kies and update to Android 4.0.3, ICS, that way. This is providing that your phone came out-of-the-box with Bell firmware and has never been flashed with any other firmware.

2. Flash the stock firmware for Bell, ICS, over the top of your existing firmware and hope for the best, see the first link in option 3.

3. This option gives you a clean start to upgrading to ICS, as described, here. Back everything up, a nandroid backup, as well as a Titanium backup and an efs backup. All three backups are described in post #2. here. You would then Factory Reset your phone and flash the Bell ICS firmware using Odin and use the Titanium backup to restore your app's. You could, if you wanted, flash, say, the Nordic, unbranded, firmware, Android 4.0.4 instead if you wanted a more up-to-date ICS version. This would mean flashing the Bell modem as well, afterwards, for your network.

All three options would require you to re-root as your existing root kernel will be over written.