v6.2.8 (2021-02-19)
* First released version

v6.2.9 (2021-04-07)
* Added support of Cinterion PLS83 modules
* Added detailed information about the signal to mobile network status
* Added information about frequency band to mobile network status
* Added programs "basename", "cut", "dirname", "printf", "readlink" and "realpath"
* Added JavaScript validation of string inputs
* Changed default APN for PLMN 22603 to "broadband"
* Changed default APN for PLMN 22610 to "net"
* Upgraded library OpenSSL to version 1.1.1k
* Upgraded program curl to version 7.76.0
* Upgraded program ftpd to version 2.0
