Firmware:

Web-Thermo-Hygrograph

Model 57620

Current firmware
Date	Changes and comments	Firmware 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	Firmware revision
July 7, 2017	Error in cloud access fixed	1.90 ZIP download
September 25, 2014	Problems in measuring value sending to the W&T cloud fixed Current configuration settings added to MIB	1.86 ZIP download
June 17, 2014	Encrypted transmission of the measurement values to the cloud via SSL	1.85 ZIP download
June 2, 2014	New: Functionality for sending measurement values to the W&T cloud added Error in Alarm Delay-Time fixed Display error for DHCP Lease Time fixed	1.84 ZIP download
April 16, 2014	SSL/TLS transmission stabilised User login blocked/waits for the end of the encrypted transmission System performance increased browser access accelerated Error corrections made to the graphical value display New: Encrypted e-mail sending using SSL/TLS New: Bi-language firmware: German/English selectable	1.83 ZIP download
February 19, 2014	Flash codes for emergency access/Factory Default Reset revised New: Encrypted e-mail sending using SSL/TLS New: Bi-language firmware: German/English selectable Firmware 1.82 or higher for WuTility v.3.82 (starting 1/11/2011) can be loaded into devices!	1.82 ZIP download
February 17, 2014	Password entry for language selection added New: Encrypted e-mail sending using SSL/TLS New: Bi-language firmware: German/English selectable	1.81 ZIP download
February 12, 2014	First firmware version	1.80 ZIP download