The stock ROM T679MUGKK1 is the Original Operating System of branded Samsung Galaxy W SGH-T679M by carrier Bell Mobility in Canada. This smartphone source released by Samsung has kernel and system differences, but the hardware specs are pretty much identical to the international version of Samsung Galaxy W GT-I8150 and the Samsung Exhibit II 4G SGH-T679 by T-Mobile in USA but it uses a different firmware because it is branded exclusively by Bell Mobility Canada.
I got this info with AnTuTu, so I figured out that this is an Android 2.3.5 Gingerbread firmware version.
ARMv7 Processor (VFPv3,NEON)
122.88 ~ 1024.0 Mhz
GPU - Qualcomm Adreno (TM) 205
OpenGL ES-CM 1.1
Linux version 18.104.22.168-perf-T679MUGKK1-CL677250 (se.infra@SEP-73) (gcc version 4.4.0 (GCC)) #3
This stock ROM is useful for returning back the device into original factory default firmware setting, just in-case in need of warranty back purposes after installing any unofficial ROM, rooting and also useful to fix softbrick. Just use the ROM carefully, you at your own.
PDA: T679MUGKK1 CSC: T679MBMCKK1
Version: Android 2.3.5 Gingebread
Stock ROM Download link:
Big thanks to Sammobile team for providing this stock ROM.