v1.5

• Improved accelerometer robustness

v1.4

• Corrected battery self-discharge calculation scaling, which was 33% too high
• Corrected battery level reported by MAC command, which showed 33% too much remaining capacity
• Corrected battery low indication on LTC batteries, which triggered too late
• Optimized battery life when trip-tracking while the network is unreachable
• Improved reliability of movement detection

v1.3

Improved GPS trip-tracking performance

v1.2

Added Uplink 33 with timestamping and inactivity timer 
Added Advanced Heartbeat features:

• Fix every nth heartbeat
• Extra heartbeats on trip end

Improved GPS stability 
Improved battery statistics accuracy 
Added position polling support in downlink 35

v1.1

First public release

v1.0

First alpha test release