[Windows Mobile] einsteinecker:
For a complete bluetooth experience, it's crucial to have the original "bluetooth" in the "Common" folder (OSKitchen). For example, I've worked with HTC builds that did not include that folder, thus breaking stuff like PAN visibility (because Broadcomm controlled that).

So, I've been looking through some Topaz ROMs, but I can't seem to find any with the Broadcomm stack. These are the ones I have tried:

RUU_Topaz_hTC_Asia_WWE_1.40.707.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship
RUU_Topaz_S2_hTC_Asia_WWE_2.53.707.4_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship
HTCPUREATTOriginalShipROM

I don't have a legendary connection speed, and thus I don't have the capacity to try them all, but which ones include the Broadcomm stack?

The list of ROMs I am able to get:

xda-diamond2-v2-16-207-3.exe
RUU_Topaz_HTC_RUS_1.39.411.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe
RUU_Topaz_S2_HTC_SPA_2.53.412.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Citrine_TMO_DE_2.13.111.3_radio_sign_topaz_61.42tc.25.31_4.49.25.05_ship.exe
RUU_Topaz_S2_HTC_WWE_2.53.405.5_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_PTG_2.53.410.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
HTC_Touch Diamond2_RUU_Topaz_S2_HTC_SPA_2.53.412.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_FRA_2.53.406.4_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
Topaz_HTC_WWE_EastEurope_1.39.479.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.rar
RUU_Topaz_S2_HTC_NLD_2.53.404.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
mda_compact_v.exe
RUU_Topaz_S_HTC_SPA_2.16.412.1_Radio_Sign_Topaz_61.44tc.25.32_4.49.25.17_Ship.exe
RUU_Topaz_S2_HTC_SVE_2.53.413.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
HTCPUREATTOriginalShipROM.exe
RUU_Topaz_HTC_SPA_1.39.412.0_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe
RUU_Topaz_S_Vodafone_DE_2.16.162.3_Radio_Sign_Topaz_61.44tc.25.32_4.49.25.17_Ship.exe
RUU_Topaz_S2_HTC_DAN_2.53.403.5_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_HTC_FRA_1.39.406.0_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe
RUU_Topaz_S_Telstra_WWE_2.31.841.6_Radio_Sign_Topaz_61.39tc.25.30_4.48.25.20_Ship.exe
RUU_Topaz_HTC_ITA_1.39.408.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe
RUU_Topaz_S2_HTC_NOR_2.53.409.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S_HTC_Asia_WWE_2.17.707.1_Radio_Sign_Topaz_61.44tc.25.32_4.49.25.17_Ship.exe
RUU_Topaz_S2_HTC_ITA_2.53.408.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_WWE_EastEurope_2.53.479.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_HTC_WWE_1.39.405.2_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe
RUU_Topaz_Dopod_CHS_1.75.706.4_Radio_Sign_Topaz_61.27t.25.23_3.45.25.21_Ship_R1.exe
RUU_Topaz_S2_HTC_TUR_2.53.468.2_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_RUS_2.53.411.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_WWE-AFK_2.53.421.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
HTC Touch Diamond2_RUU_Topaz_S2_HTC_SPA_2.53.412.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S_Vodafone_DE_2.16.162.1_Radio_Sign_Topaz_61.44tc.25.32_4.49.25.17_Ship.exe
RUU_Topaz_HTC_GER_1.39.407.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19DE_Ship.exe
RUU_Topaz_S2_HKCSL_CHT_2.53.832.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_ELL_2.53.482.4_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HTC_GER_2.53.407.6_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_hTC_Asia_TW_2.53.709.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_hTC_Asia_India_de3G_WWE_2.54.1300.2_Radio_Signed_Topaz_61.44c.25.33_2.49.25.204_ESM7206A_Ship.exe
RUU_Topaz_S2_hTC_Asia_WWE_2.53.707.4_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_S2_HKCSL_WWE_2.53.831.3_Radio_Signed_Topaz_61.44etc.25.35_4.49.25.91_Ship.exe
RUU_Topaz_hTC_Asia_WWE_1.40.707.1_Radio_Signed_Topaz_61.20t.25.10_3.43.25.19_Ship.exe