HTC has made a new software update available for AT&T Tilt. The ROM version 1.62.502.0 is a minor update, which will improve bluetooth connection quality and others.

This software update provides:

• Enhanced Bluetooth performance.
• Enables DTMF tones for the slide-out QWERTY keyboard.
• Improves overall device performance and stability.
• Includes Microsoft Adaptation Kit Update (AKU) 0.4.4.

Download the ROM here , and also check out the install instruction here