HTC has started rolling out a new firmware update for Unlocked HTC U Ultra units in USA. The latest OTA update brings July security patch for HTC U Ultra arrives as firmware version 1.64.617.2. This OTA is meant to fix the security by installing July security patch along some under the hood improvements and system enhancements.
Users in Europe are mostly heard complaining about not getting the security updates on time so US is the only region where updates strike on time. If you live in US and wish to download and install the HTC U Ultra July security patch 1.64.617.2 build on it then directly head to Settings > About device > System updates.
Download HTC U Ultra 1.64.617.2 RUU
If OTA doesn’t hit your device yet, don’t worry just gran the firmware 1.64.617.2 RUU and install it manually. Stay tuned for more updates.