A couple of days ago, when HTC unveiled the One X+, it also announced that it will start rolling out the Android 4.1.1/Sense 4+ update for the One X and the One S sometime this month. While the official OTA roll-out from HTC still has not begin, a popular XDA developer at XDA forums, Football, has managed to get his hands on a stable Android 4.1.1 RUU for the handset, and has even released a custom ROM based on it.
At the moment it is not known whether the RUU used as the base by the developer is the final official RUU or not, but even then the ROM is stable enough for day-to-day use. XDA users who have already flashed the Android 4.1.1/Sense 4+ custom ROMs on their handset are reporting much better performance and battery life, all thanks to the new 3.1.10 linux kernel and Project Butter.
The base RUU also contains updated GSM modules and a new radio, which should ideally, improve the network reception and data speeds for some users.
One X owners can head over to this link to flash Football’s One maXimus v4.0 custom ROM. Do follow the steps closely, otherwise you may end up bricking your phone. Also keep in mind that there is no way to flash back to Ice Cream Sandwich ROM after this, so proceed with caution.
P.S. – The above custom ROM is only for the Tegra 3 variant of the HTC One X.