Firmware:

AT-Modem-Emulator

Model 58666

Current firmware
Date	Changes and comments	Revision
July 24, 2019	Fixed possibly critical weaknesses in Web Based Management (VDE-2022-043) Readout of the UART error register corrected	1.48 ZIP download

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Older firmware
Date	Changes and comments	Revision
June 18, 2018	Connection opening optimized when using with mobile networks with delayed return direction	1.46 ZIP download
March 21, 2018	Processing of BREAK signals adjusted Support of a new flash type Optimized operation in DHCP environments with relay agents Security problem with Port 1094/TCP fixed Optimizations/corrections for Web-Based-Management Buffer handling optimized	1.45 ZIP download
December 28, 2016	Optimized system response in noisy/slow network environments	1.40 ZIP download
August 8, 2016	DHCP: Lease time calculation corrected	1.39 ZIP download
June 15, 2016	Various SSL/TLS optimizations	1.38 ZIP download
April 12, 2016	Serial buffer handling optimized	1.37 ZIP download
December 4, 2015	NEW: Optional TLS encrypted data connection Corrected behavior with CRLF as line end and dial-up via URL	1.35 ZIP download
October 8, 2015	Corrected behavior for CRLF as line end of AT commands	1.34 ZIP download
January 6, 2015	First version	1.32 ZIP download

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