help how can I update a Galaxy S 3 GT-I9300?

[federc95]

Good evening, I'm new in this forum... I'm Italian and i have to say sorry to you if I'll do some mistake! however i have got Galaxy s3 4.1.2 with IMEI Changed through Octoplus Box..
So that's my question:

How could I upgrade my cell phone to 4.3 without losing my network?
Could I use original firmware and flash it with Odin?

I'm a bit confused!
Thanks in advance

[gcceleghg]

Samsung may have skipped properly testing the Android 4.3 update for the Galaxy S III in a bid to get it out there as soon as possible. The update, which started rolling out to unlocked international variants of the S III today and to Vodafone-branded handsets a few days ago, is causing all sorts of issues for users, and as a result Samsung might have pulled the plug and paused its rollout.

The issues the Android 4.3 update has introduced are pretty major, including reduced battery life, app crashes, inconsistent Wi-Fi connections, laggy performance, and even complete lockups of the device on the lockscreen that can only be solved by pulling out and reinserting of the battery. The folks over at Phones Review report that the update was initially available on their UK handset, but after ignoring it and attempting to update the next day, their S III simply said the latest updates were installed, which is a pretty good indication that the update might have been pulled by Samsung, and the Note II update might be put on hold as well, considering how similar it is to the S III in both software and hardware.

From the comments on both our site and our Facebook feed, it seems these issues are affecting more than a few users out there, in which case we hope Samsung is working on fixing things as soon as humanly possible. The wait for Android 4.3 has already been quite a long one, and a few more weeks won’t be too bad if it means users can get a stable experience. In the meantime, do try to refrain from updating your S III at this point, at least not before we can get some more info on the matter.

[gcceleghg]

The new software update is being rolled out in phases, so it may not yet be available in your country at the moment but don’t worry it will arrive very soon. If your device is carrier branded then it might take sometime as the update has to get improved by the carrier first and only then Samsung will make it available for your device. For now, the new software update is only available in the United Kingdom.
To keep track of the countries and carriers receiving the new Android 4.3 (Jelly Bean) update for the Samsung Galaxy S III (GT-I9300), check out our live feed below:

Country/Carrier Status Kies / OTA / Firmware page
Afghanistan - AFG 15 Jan 10:05:33 Available
Algeria - TMC 12 Jul 05:24:19 Available
Argentina - ANC 22 Feb 06:59:51 Available[/URL]
Argentina - ARO 25 Jan 09:00:30 Available
Argentina (Claro) - CTI 31 Jan 16:54:04 Available
Argentina (Movistar) - UFN 04 Mar 10:59:06 Available
Argentina (Personal) - PSN 07 Feb 03:36:33 Available
Australia - XSA 16 Jan 12:46:12 Available
Australia (Optus) - OPS 04 Feb 05:37:45 Available
http://www.**************/firmwares/1/

[federc95]

No bro, in Italy Galaxy S3 4.3 firmware is already out.. via OTA and kies too... my friends have upgraded their phone yet... so, I'd like to know how could I upgrade my S3 with no losing the network...

Is possible to do, Using original firmware, flashing through Odin and reinstalling ariza patch?
Or how?

[Octopus box]

Hello.

How could I upgrade my cell phone to 4.3 without losing my network?

To write firmware with 4.3 Android version do the next:
1. Select firmware "I9300XXUGMJ9_I9300VFGGMJ5_Ireladn(Vodafone)_Andro id_4.3" from the Support Area (currently there is only one tested firmware with 4.3 Andorid version; we will upload several new firmwares in a few hours).
2. Put the phone into Download Moode. To put GT-I9300 phone into Download Mode You have to perform the following steps:
2.1. Reconnect phone's battery.
2.2. Press and hold "Volume - " + "Home" + "Power" buttons.
2.3. When phone turns on, press "Volume+" button.
3. Press "Write Firmware" button on Software.

After writing of the firmware will be succesfully complete, You need to perform "Repair Network" operation to make network available (active).

Could I use original firmware and flash it with Odin?

Yes, You can, but after of writing the firmware, You also need to perform "Repair Network" operation by using Octopus/Octoplus Box Samsung Software to make network available (active).

[federc95]

Thanks very much... but what happens if I'd write the original italian firmware instead of this

I9300XXUGMJ9_I9300VFGGMJ5_Ireladn(Vodafone)_Andro id_4.3

[Octopus box]

Yes, of course, You can try to write original italian firmware.

[federc95]

And what could happen in the worst case?
could I lose again the new IMEI?