Previous official firmware releases for Grandstream products are available for downloading. Please see table below.
Release Notes
UCM6202/6204/6208
UCM6510
UCM6301/6302
UCM6304/6308
UCM6300A/6302A
UCM6304A
UCM6308A
GXP1780/1782GXP1760/GXP1760W
WP820
DP752 / DP750 / DP760
GXW4501GXW4502GXW4504