*** GSM STUDIO HYBRID *** v1.0 18-07-2016 ---------------- Initial release v1.1 10-08-2016 ---------------- [+] D&R serial number storage in EEPROM. (format: yymmddnnvv) yy = year mm = month dd = day nn = index number vv = hardware revision [+] Device alias name storage in EEPROM. (ex. "Tel Hybrid 1") v1.2 07-09-2016 ---------------- [-] Bugfix: Device stopped working after some time (stack overflow due to too large USB HID report size) [+] Alert feature: Reporter can alert studio by pressing the '0' on his phone when having an active connection. ** NOTE: This firmware will only work with GSM Hybrid Control software V2 or above. v1.3 30-01-2017 ---------------- [-] Bugfix: Incoming call is sometimes rejected by pressing the Connect(Ring/hook) button. v1.4 03-08-2017 ---------------- [-] Bugfix: Initiate a call does not always work. v1.5.130.0 30-03-2018 ---------------- [-] Bugfix: Heavy USB traffic possibly causes connection lost over some time (days). v1.5.150.0 30-03-2018 ---------------- [-] Bugfix: Minor bug fixes v1.5.226.0 20-04-2018 ---------------- [*] Complete redesign of the internal communication protocol. Stability improvement. [+] GSM Hybrid can operate standalone now without PC software. (all settings are stored internally). v1.6.286.0 16-05-2018 ---------------- [-] Bugfix: Serial number reading from empty EEPROM results in crash of PC application. [+] Factory reset: Holding down the [CONNECT] button on the front for at least 15sec (Connect LED flashes 3x).