Possible Duplicate:
Where can I find stock or custom ROMs for my Android device?
I have found many custom ROMs for download. But now I want to use the official ROM for my phone. Is there any way to do it without a NAndroid backup?
Topic custom-roms nexus-one android
Category Android
Download ROM Manager and go to the "Stock Images" section of "Download ROMs".
You should always do a Nandroid backup when messing with system files. There's always a risk of something going wrong. Also when installing new ROMs (whether custom or stock), it's recommended that you do a clean wipe of the system before installing.
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