Samsung Galaxy S2 LTE (DoCoMo) (SC-03D) Firmware Overview
The archive lists 2 official builds for the Samsung Galaxy S2 LTE (DoCoMo) across 1 region (CSC). The newest one is SC03DOMMP5, released December 2, 2013 with Android Cream.
How to Flash SC-03D Firmware
Put the Samsung Galaxy S2 LTE (DoCoMo) into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with the same or a higher Bit than the one installed — a lower bootloader binary will be rejected.