[Sticky] How To Flash

[SIZE=3][B]The correct procedure for switching from one carrier’s firmware to another is:[/B]

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[SIZE=3]1. Flash full U1 firmware package including non HOME CSC[/SIZE]
[SIZE=3]2. Upon boot, insert a SIM of the carrier whose firmware you want[/SIZE]
[SIZE=3]3. Watch for the popup that says “reboot to apply new carrier settings” etc., and do it[/SIZE]
[SIZE=3]4. After that restart completes, reboot back to Download mode and flash the full U firmware package, with the USERDATA file of the carrier whose firmware you want[/SIZE]