User visible changes in the firmware version 3.3 p6 since version 3.3 p5 Highlights. 1. Problem connected with GLONASS R09 satellite has been resolved. 2. Internal logic of RTK engine has been corrected (problem of frozen RTK float solutions) 3. The format of [NE] message has been corrected for GR-3 and Net-G3 boards. 4. Problem connected with temporary blockage of GLONASS data when working as a reference station has been resolved for Turbo boards. 5. New verison of firmware (0x24) for GR-3 Power Board has been prepared. 6. Problem connected with rejecting of incoming TCP connections has been resolved for GR-3 receivers. 7. Problem connected with NTRIP server automatic reconnection after startup or link disconnection has been resolved. 8. Problem connected with link failures in PPP mode when working with CDMA Verizon modems has been resolved. 9. Direct IP rover-to-base functionality has been restored. 10. A problem connected with NTRIP functionality has been resolved.