HTC just began to rollout a software update for its HTC One max which was launched back in fall this year as the first HTC One device with Android 4.3 and HTC Sense 5.5. The software update v1.54.401.1 is said to contain a couple of important enhancements and bug fixes including system improvements for touch responsiveness, SIM card detection, WiFi connection and the general stability. Furthermore is the update featuring a HTC Sense Gallery fix for issues when posting HTC Share to Facebook. Last but not least the update will finally shows a battery status indicator for the HTC Power Flip Case, so far there was no info about the battery status, as well as it's said to improve the charging performance.
The 88 MB small software update is now available and distributed as an OTA download. I'm not sure if HTC is rolling it out in a staged way or if all HTC One max will receive it the same time. Out One max showed it after we looked under settings for updates.
Cheers ~ Arne