*Flash your device at your own risk*
(07/31/2012) [SS] DeejayCrazy Stock (V21A)
(07/30/2012) [SS] ChuSoft 3D ROM 4.0.8 +
(07/17/2012) [SS] Acura Team 3D Max 2 v3.1
(07/12/2012) [SS] ThiaiZO3D V2.8 (V21E)
(07/04/2012) [SS] The Promethius Project Version 1.5 21E (2.3.5)
(07/03/2012) [SS] ThiaiZO3D PRADA V2.6.1 (V21a)
(06/30/2012) [SS] SuperStock v1.1.0 (V21E)
(06/28/2012) [SS] CyanogenMod 7.2+ v1.6 (2.3.7)
(06/19/2012) [SS] Mokee OS v2.0 (2.3.7)
(06/16/2012) [SS] Cyanogenmod V7.2 (2.3.7)
(06/05/2012) [SS] Hyperion V1.0 (V21D/V20E)
(05/26/2012) [SS] XBSA P920 (V21E) & SU760 (V20F)
(05/19/2012) [SS] Lewa ROM 1.0 (port)(2.3.7)
(05/05/2012) [SS] DNA_GB 3.3.3 (V21E)
All links are from xda-developers forum*
2.3.5 – V21A, V21E