Samsung Galaxy Music Duos (GT-S6012) Firmware Overview
What is the latest GT-S6012 firmware?
S6012XXALL1, released December 3, 2012 for region SER with Android 4.0. The archive holds 2 official builds for this region.
Is the Samsung Galaxy Music Duos still getting updates?
Most likely not: there has been no new firmware since December 2012, so Android 4.0 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
GT-S6012 firmware for region SER
How to Flash GT-S6012 Firmware
Put the Samsung Galaxy Music Duos 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.