In case of recent firmware of V2 which has Daylight Saving Time feature, it supports another field of log data of the firmware.
It is not compatible with BioStar 1.93 SW. So, the unstable 2nd generation device issue will occur.
1) Can't upload the logs from 2nd generation device
2) Can't connect 2nd generation device to BioStar Server
There are two ways to prevent the issue.
1) Using the compatible FW
2) Using a patch file of BioStar 1.93
How to apply
a) Stop BioStar server
b) Go to C:\Program Files (x86)\BioStar\server and make a backup folder for "server"
c) Download the below patch and unzip.BioStarV1.93_Server_SupportDSTAndImagelog.7z
d) Copy the unzip file to C:\Program Files (x86)\BioStar\server
e) Start BioStar Server