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hwOS4: New Firmware 1.7.6 beta with new Compass

Last post by heinrichsweikamp « 10 Jul 2026, 15:59
Posted in OSTC 4 and OSTC 5

by heinrichsweikamp » 10 Jul 2026, 15:59 » in OSTC 4 and OSTC 5

0 Replies

1644 Views

Last post by heinrichsweikamp
10 Jul 2026, 15:59
hwOS TECH: New Firmware 3.37

Last post by heinrichsweikamp « 31 May 2026, 16:54
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 31 May 2026, 16:54 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

2030 Views

Last post by heinrichsweikamp
31 May 2026, 16:54
hwOS Sport: New Firmware 10.97

Last post by heinrichsweikamp « 24 May 2026, 16:23
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 24 May 2026, 16:23 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

3295 Views

Last post by heinrichsweikamp
24 May 2026, 16:23
Using Subsurface to update BLE-only OSTC

Last post by heinrichsweikamp « 09 Apr 2026, 10:22
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 09 Apr 2026, 10:22 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

18629 Views

Last post by heinrichsweikamp
09 Apr 2026, 10:22
CCR cave bailout function request

Last post by sailor « 30 Jan 2026, 21:59
Posted in OSTC 4 and OSTC 5

by sailor » 30 Jan 2026, 21:59 » in OSTC 4 and OSTC 5

0 Replies

16570 Views

Last post by sailor
30 Jan 2026, 21:59
strange number in "no altitude" menu point

Last post by Viola04 « 03 Jan 2026, 21:15
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by Viola04 » 03 Jan 2026, 21:15 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

22475 Views

Last post by Viola04
03 Jan 2026, 21:15
hwOS Sport: New Firmware 10.92

Last post by heinrichsweikamp « 02 Jan 2026, 19:02
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 02 Jan 2026, 19:02 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

24831 Views

Last post by heinrichsweikamp
02 Jan 2026, 19:02
OSTC sport : cannot download dives with subsurface since 10.85

Last post by WaryWombat « 12 Dec 2025, 18:02
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by WaryWombat » 12 Dec 2025, 18:02 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

22805 Views

Last post by WaryWombat
12 Dec 2025, 18:02
OSTC SPORT Bluetooth und Download funktioniert nicht

Last post by philipph84 « 26 Oct 2025, 16:59
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by philipph84 » 26 Oct 2025, 16:59 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

22300 Views

Last post by philipph84
26 Oct 2025, 16:59
hwOS Sport: New Firmware 10.87

Last post by heinrichsweikamp « 25 Aug 2025, 15:35
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 25 Aug 2025, 15:35 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

15446 Views

Last post by heinrichsweikamp
25 Aug 2025, 15:35
Companion 3.2 beta 1 not connecting to OSTC3

Last post by Tjotte « 06 Jul 2025, 11:02
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by Tjotte » 06 Jul 2025, 11:02 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

13701 Views

Last post by Tjotte
06 Jul 2025, 11:02
Ostc Sport

Last post by jordanrc « 20 May 2025, 21:40
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by jordanrc » 20 May 2025, 21:40 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

14575 Views

Last post by jordanrc
20 May 2025, 21:40
hwOS4: New Firmware 1.7.1 with RTE 3.50

Last post by heinrichsweikamp « 06 May 2025, 14:44
Posted in OSTC 4 and OSTC 5

by heinrichsweikamp » 06 May 2025, 14:44 » in OSTC 4 and OSTC 5

0 Replies

21777 Views

Last post by heinrichsweikamp
06 May 2025, 14:44
Dive not registered in logbook

Last post by mobu « 12 Apr 2025, 19:12
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by mobu » 12 Apr 2025, 19:12 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

166836 Views

Last post by mobu
12 Apr 2025, 19:12
Glitch on OSTC4 with latest firmware.

Last post by Divert « 13 Mar 2025, 17:27
Posted in OSTC 4 and OSTC 5

by Divert » 13 Mar 2025, 17:27 » in OSTC 4 and OSTC 5

0 Replies

22724 Views

Last post by Divert
13 Mar 2025, 17:27
New firmware 3.26

Last post by dadefay « 18 Jan 2025, 13:17
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by dadefay » 18 Jan 2025, 13:17 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

21297 Views

Last post by dadefay
18 Jan 2025, 13:17
GF99 or equivalent function on 2N

Last post by Markus MDDT « 15 Aug 2024, 19:58
Posted in OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)

by Markus MDDT » 15 Aug 2024, 19:58 » in OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)

0 Replies

40904 Views

Last post by Markus MDDT
15 Aug 2024, 19:58
New registered user? Please read.

Last post by heinrichsweikamp « 14 Feb 2024, 10:30
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 14 Feb 2024, 10:30 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

79573 Views

Last post by heinrichsweikamp
14 Feb 2024, 10:30
boot 2024

Last post by heinrichsweikamp « 15 Jan 2024, 18:52
Posted in OSTC 4 and OSTC 5

by heinrichsweikamp » 15 Jan 2024, 18:52 » in OSTC 4 and OSTC 5

0 Replies

42172 Views

Last post by heinrichsweikamp
15 Jan 2024, 18:52
USB OSTC users - please read!

Last post by heinrichsweikamp « 24 Oct 2023, 13:42
Posted in OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)

by heinrichsweikamp » 24 Oct 2023, 13:42 » in OSTC Mk.2, 2N and 2C (Sold between 2007 and 2014)

0 Replies

144796 Views

Last post by heinrichsweikamp
24 Oct 2023, 13:42
Bluetooth schaltet aus

Last post by remo_v « 12 Oct 2023, 17:42
Posted in OSTC 4 and OSTC 5

by remo_v » 12 Oct 2023, 17:42 » in OSTC 4 and OSTC 5

0 Replies

102860 Views

Last post by remo_v
12 Oct 2023, 17:42
hwos 3.21 bluetooth issue

Last post by Albi « 30 Aug 2023, 12:24
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by Albi » 30 Aug 2023, 12:24 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

121174 Views

Last post by Albi
30 Aug 2023, 12:24
HW HUD Help!

Last post by Jason_D « 09 Apr 2023, 10:35
Posted in OSTC 4 and OSTC 5

by Jason_D » 09 Apr 2023, 10:35 » in OSTC 4 and OSTC 5

0 Replies

100050 Views

Last post by Jason_D
09 Apr 2023, 10:35
hwOS Sport: New Firmware 10.76

Last post by heinrichsweikamp « 31 Mar 2023, 09:48
Posted in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

by heinrichsweikamp » 31 Mar 2023, 09:48 » in OSTC+, 3, cR, sport, nano and OSTC 2 (Mod. 2015 and later)

0 Replies

114603 Views

Last post by heinrichsweikamp
31 Mar 2023, 09:48
Bottomtimer logbook will not load

Last post by ajs7t « 22 Feb 2023, 20:17
Posted in OSTC 4 and OSTC 5

by ajs7t » 22 Feb 2023, 20:17 » in OSTC 4 and OSTC 5

0 Replies

95791 Views

Last post by ajs7t
22 Feb 2023, 20:17

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