Download Lenovo_S720_VIBE_SJDS_201217 firmware from here or from here. Download Lenovo_S720_VIBE_SJJL_20141217 firmware from here or from here. Download previous firmware from here.
Archives: Lenovo_S720_VIBE_SJDS_201217 fw / Lenovo_S720_VIBE_SJJL_20141217 fw
Image: Lenovo_S720_VIBE_SJDS_201217.zip / Lenovo_S720_VIBE_SJJL_20141217.zip
Image: Lenovo_S720_VIBE_SJDS_201217.zip / Lenovo_S720_VIBE_SJJL_20141217.zip
Model: Lenovo S720 Smartphone
Image file size: 235 MB / 245 MB
Platform: Mediatek MT6577
Build number: S720-user 4.0.4 IMM76D S720_S137_130827 release-keys
Build number: S720-user 4.0.4 IMM76D S720_S137_130827 release-keys