Official (stock) ROMs (build number) Android 1.5 (Cupcake) HTC Generic - 2.73.405.66 [link] 3 UK - 2.73.771.73 [link] Orange UK - 220.127.116.11 [link] T-Mobile UK - 18.104.22.168 [link] Android 2.1 (Eclair) Update is only available OTA (OverTheAir) at present. Ensure that you have the most recent 1.5 firmware installed (see above) to obtain the OTA update. Custom (third-party) ROMs (version) Android 2.1 (AOSP) CyanogenMod for Hero - 1.4.3 [link] Vanillain - 2.0 [link] VanillaEclair - 5.0 [link] Android 2.1 (HTC Sense) ChocolateEclair - 2.0[link] Kimera - 2.1 [link] MoDaCo - r5 [link] RCMix - v2.2 [link] SenseESPRESSO 2.1 - b4 [link] SenseHERO 2.1 - b5 [link] VillainROM - 13.0 [link] Android 2.2 (Froyo) ChocolateFroyo (SenseUI)- 1.0 [link] Elelinux v2.2.1 [link] or the Swedish home page [link] FroydVillain 1.7.2 [link] FusionROM 2.2 [link] Android 2.3 (Gingerbread) Cronos Ginger - 1.9.5 [link] CyanogenMod 7.0.0 - nightly builds [link] Elelinux v7.1.0 - 2.3 [link] Recovery Images (version) Amon_RA RA-Hero - 22.214.171.124 [link] ROM Manager (ClockworkMod) - 126.96.36.199 [link] Notes: (a) This is merely intended as a quick guide to the most recent versions available. No endorsement by Android Forums is implied. (b) Selection is based purely on personal experience and recommendation by other users. Other ROMS are available. (c) The thread will be kept as up-to-date as possible, but if you know of a more recent release version (or a ROM which should be included) please PM details to me so that it can be amended. (d) Installing these is done at your own risk. Neither myself nor Android Forums will be liable for any loss of data, damage to hardware, or mental trauma that results.