I'm not a nube but this is my first Android. I have UCLF5 on my phone but do I have to go back to gingerbread before I do this update? Don't want to brick my phone and I like the leak I have now
Sent from my SAMSUNG-SGH-I727 using Android Central Forums
I was on that build as well, I followed the steps below to go from UCLF5 to UCLF6..
**Backup any data you feel is important first** Pictures, attachments, downloads
Shut down your phone and pull out the battery, write down your S/N for your phone should be 11 alphanumeric characters long.
Install Kies and then click Tools -> Firmware Upgrade and Initialization, click OK
Confirm the next prompt (I don't think mine prompted this, but it did since I have the update now)
Then you should arrive at a screen asking for Serial Number and Model... For S/N put in the number you wrote from under the battery. For Model type in SGH-I727 (all caps or it will fail), click OK.
Then Kies will prompt you to connect the phone... perform the following.
Next you have to put your phone in recovery mode, to do so, make sure it is shut off. Press both volume up and down and do not release, while holding them down plug in USB to the computer and the phone (helps to already have it connected to the PC).
You can release volume up / down when you see green and blue text show up on the screen. This screen will warn you about flashing custom ROMs, just press volume up and the phone will be put in to download mode, you can leave it connected to the computer while in this mode.
Click OK/Next on the computer and the process will begin. The first bar is Kies downloading the update, second bar is it flashing to the phone.
After the first two bars it will prompt you that it is setting up the phone and NOT to disconnect it until the phone reboots. I clicked okay and waited. The phone did reboot 2-3 minutes after that window. Once I saw the AT&T splash screen I disconnected.
Then it took about 4 minutes to setup apps and start the OS, then I was back to my phone exactly as it was running UCLF5 but now was on UCLF6.
In my experience which is limited to just me, it worked great and did not wipe out any data at all! No re-setup for me!