Recent upgrade history
    (Minor) July 28, 2021 Band upgrade: Battery Function improvement (Band V2.8.2)
    (Minor) July 28, 2021 Gateway upgrade: Communication stability improvement (Gateway V2.8.2)
    (Minor) July 19, 2021 App upgrade: Stability improvement (Android V2.8.1)
    (Minor) June 28, 2021 Band upgrade: Increased signal measurement stability (Band V2.8.0)
    (Major) June 28, 2021 Gateway upgrade: Increased signal measurement stability (Gateway V2.8.0)
    (Major) May 20, 2021 App upgrade: Communication stability improvement (Android V2.8.0)


The major improvements for each device are as follows. We hope that many of you will use it.

1. Band Firmware (Ver 2.8.2: 2021-7-28 patch)
    - Ver2.8.1 has improved battery function
    - Ver2.8.0 has Increased signal measurement stability  * It is recommended to upgrade.

2. Gateway Firmware (Ver 2.8.2: 2021-7-28 patch) 
    - Ver2.8.2 has improved communication stability.
    - Ver2.8.0 has Increased signal measurement stability 
    * Please upgrade the Gateway first before upgrading the Band.

3. Android App (Ver 2.8.0, Ver 2.8.1: 2021-7-19 patch)
    - Ver2.8.1 has improved stability
    - Ver2.8.0 has improved communication problems that occur occasionally during long-term measurement
 
4. iOS App (Ver 2.7.4)
    - Using existing apps