Firmware:

Web-Graph Air Quality

Model 57618

Current firmware
Date	Changes and comments	Revision
July 8, 2020	Encrypted cloud transmission for maintaining function using enhanced security standards (TLS1.2), which this hardware does not support, are turned off.	1.92 ZIP Download

Older firmware
Date	Changes and comments	Revision
July 7, 2017	Error in cloud access fixed	1.90 auf Anfrage
April 22, 2015	Problem fixed: Memory matrix for graphics settings cleared up.	1.88 auf Anfrage
February 19, 2015	Problem fixed: Value range of the VOC sensor adapted.	1.87 auf Anfrage
September 25, 2014	Problems in measuring value sending to the W&T cloud fixed Current configuration settings added to MIB	1.86 auf Anfrage
June 17, 2014	New: Functionality for sending measurement values to the W&T cloud added Encrypted transmission of the measurement values to the cloud via SSL	1.85 auf Anfrage
April 16, 2014	First firmware version	1.83 auf Anfrage