T-Mobile HTC One gets software update to improve LTE connectivity, enhance processor and improve software stability - HTC Source
T-Mobile is rolling out a software update for the HTC one which included improved LTE connectivity, processor efficiency improvements and minor software tweaks to improve overall stability. The 1.27.531.11 update weighs in at 247 MB. This is not the android 4.2.2 update that we’ve been waiting for, but it’s nice to see that HTC and T-Mobile are working hard to make sure that the handset if working as efficiently as possible.
If you have not yet received the update on your T-Mobile HTC One, you can ping HTC’s servers manually by going to Settings > About > Software Updates > Check now.