Samsung Galaxy Trend 3 (SM-G3508) Firmware Overview
The archive lists 2 official builds for the Samsung Galaxy Trend 3 across 1 region (CSC). The newest one is G3508ZMUAMK3, released December 4, 2013 with Android Bean.
How to Flash SM-G3508 Firmware
Put the Samsung Galaxy Trend 3 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.