Samsung Galaxy R (GT-I9103) Firmware Overview
What is the latest GT-I9103 firmware?
I9103XWKG8, released July 27, 2011 for region COA with Android 2.3.4. The archive holds 2 official builds for this region.
Is the Samsung Galaxy R still getting updates?
Most likely not: there has been no new firmware since July 2011, so Android 2.3.4 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
GT-I9103 firmware for region COA
How to Flash GT-I9103 Firmware
Put the Samsung Galaxy R into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Use HOME_CSC to keep your data, CSC for a full wipe.