This is a list of all the supported models:
Name Firmware version Aastra 6731i 2.6.0.66 Aastra 6755i 1.37 Atcom 530 1.6.79.68 Cisco SPA303 7.4.8 Cisco SPA504G 7.4.8 Cisco SPA525G2 7.4.8 Grandstream BT200 1.1.6.46 Grandstream BT201 1.1.6.46 Grandstream GXP1200 1.1.6.46 Grandstream GXP2000 1.1.6.46 Grandstream GXP2010 1.1.6.46 Grandstream GXP2020 1.1.6.46 Grandstream GXP280 1.1.6.46 Snom 300 7.3.14 Snom 320 7.3.14 Snom 360 7.3.14 Snom 370 7.3.14 Snom 870 7.3.14 Thomson ST2030s 2.67 Yealink T20P 9.60.0.100 Yealink T26P 6.60.0.100 Yealink T28P 2.60.0.100