: Power off the device, then hold Volume Down + Power (or Volume Down + Home + Power) until the warning screen appears. Press Volume Up to confirm.

: Often hosts community-verified links for both stock ROMs and unofficial custom ROMs (like Android 4.2 Jelly Bean) for those looking to push the hardware further. Samsung Galaxy S WiFi YP-G70 Android 2.2 Q&A - JustAnswer

The final official update for most regions.

: You will need the stock ROM file (usually in .tar.md5 format) and the correct PIT file (Partition Information Table) if you are repartitioning the device.